View source for Geneva Protocol

{{short description|Treaty prohibiting the use of chemical and biological weapons in international armed conflicts}}
{{other uses}}
{{redirect-distinguish|Geneva Protocols|Geneva Conventions}}
{{Use dmy dates|date=August 2021}}
{{Infobox Treaty
|name                = Geneva Protocol
|long_name           = Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare
|image               =
|image_width         =
|caption             =Countries part of the Geneva Protocol
|type                =
|date_drafted        = 17 June 1925<ref name=dep/>
|date_signed         = 17 June 1925<ref name=dep/>
|location_signed     = [[Geneva]]<ref name=dep/>
|date_sealed         =
|date_effective      = 8 February 1928<ref name=dep/>
|condition_effective = Ratification by 65 states<ref>Chemical Weapons Convention, [http://www.opcw.org/chemical-weapons-convention/articles/article-xxi-entry-into-force Article 21].</ref>
|date_expiration     =
|signatories         = 38<ref name=dep/>
|parties             = 146<ref name=unoda/>
|depositor           = Government of France<ref name=dep>{{cite web|url=http://www.diplomatie.gouv.fr/traites/affichetraite.do?accord=TRA19250001|title=Protocole concernant la prohibition d'emploi à la guerre de gaz asphyxiants, toxiques ou similaires et de moyens bactériologiques, fait à Genève le 17 juin 1925|access-date=23 July 2013|publisher=[[Ministry of Foreign and European Affairs (France)|Ministry of Foreign and European Affairs of France]]|language=fr|archive-url=https://web.archive.org/web/20081202071155/http://www.doc.diplomatie.gouv.fr/BASIS/pacte/webext/multidep/DDW?W%3D+ORDER+BY+DATOP%2FAscend%26M%3D18%26K%3D19250001%26R%3DY%26U%3D1|archive-date=2 December 2008|url-status=dead|df=dmy-all}}</ref>
|language            =
|languages           = 
|wikisource          =Geneva Protocol to Hague Convention
}}

The '''Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare''', usually called the '''Geneva Protocol''', is a [[treaty]] prohibiting the use of [[chemical weapons|chemical]] and [[biological weapons]] in international [[armed conflicts]]. It was signed at [[Geneva]] on 17 June 1925 and entered into force on 8 February 1928. It was registered in ''[[League of Nations]] [[Treaty Series]]'' on 7 September 1929.<ref>''League of Nations Treaty Series'', [https://treaties.un.org/doc/Publication/UNTS/LON/Volume%2094/v94.pdf vol. 94, pp. 66–74].</ref> The Geneva Protocol is a protocol to the Convention for the Supervision of the International Trade in Arms and Ammunition and in Implements of War signed on the same date, and followed the [[Hague Conventions of 1899 and 1907]].

It prohibits the use of "asphyxiating, poisonous or other gases, and of all analogous liquids, materials or devices" and "bacteriological methods of warfare". This is now understood to be a general prohibition on chemical weapons and biological weapons between state parties, but has nothing to say about production, storage or transfer. Later treaties did cover these aspects – the 1972 [[Biological Weapons Convention]] (BWC) and the 1993 [[Chemical Weapons Convention]] (CWC).

A number of countries submitted reservations when becoming parties to the Geneva Protocol, declaring that they only regarded the non-use obligations as applying to other parties and that these obligations would cease to apply if the prohibited weapons were used against them.<ref>{{Cite web|title=Disarmament Treaties Database: 1925 Geneva Protocol|url=http://disarmament.un.org/treaties/t/1925|access-date=2021-02-09|website=[[United Nations Office for Disarmament Affairs]]}}</ref><ref name=":0">Beard, J. (2007). "The Shortcomings of Indeterminacy in Arms Control Regimes: The Case of the Biological Weapons Convention". American Journal of International Law. 101(2): 271–321. doi:[https://doi.org/10.1017/S0002930000030098%5B 10.1017/S0002930000030098]. p., 277</ref>

==Negotiation history==
[[Image:British 55th Division gas casualties 10 April 1918.jpg|thumb|right|British troops blinded by poison gas during the [[Battle of Estaires]], 1918]]
In the [[Hague Conventions of 1899 and 1907]], the use of dangerous chemical agents was outlawed. In spite of this, the [[First World War]] saw large-scale [[chemical warfare]]. [[French Third Republic|France]] used [[tear gas]] in 1914, but the first large-scale successful deployment of chemical weapons was by the [[German Empire]] in [[Ypres]], [[Belgium]] in 1915, when [[chlorine gas]] was released as part of a German attack at the [[Battle of Gravenstafel]]. Following this, a chemical [[arms race]] began, with the [[United Kingdom]], [[Russia]], [[Austria-Hungary]], the [[United States]], and [[Italy]] joining [[France]] and [[Germany]] in the use of chemical weapons.{{citation needed|date=November 2024}}

This resulted in the development of a range of horrific chemicals affecting lungs, skin, or eyes. Some were intended to be lethal on the battlefield, like [[hydrogen cyanide]], and efficient methods of deploying agents were invented. At least 124,000 tons were produced during the war. In 1918, about one grenade out of three was filled with dangerous chemical agents.{{citation needed|date=November 2024}} Around 500k-1.3 million casualties of the conflict were attributed to the use of gas, and the psychological effect on troops may have had a much greater effect. A few thousand civilians also became casualties as collateral damage or due to production accidents.<ref>{{cite book|title=The Poisonous Cloud: Chemical warfare in the First World War|pages = 239–253|last1 = Haber|first1 = L. F.|year = 2002| publisher=Oxford University Press |isbn=9780191512315 }}</ref>

The [[Treaty of Versailles]] included some provisions that banned Germany from either manufacturing or importing chemical weapons.<ref>{{Cite journal |last=Baxter |first=R. R. |last2=Buergenthal |first2=Thomas |date=1970 |title=Legal Aspects of the Geneva Protocol of 1925 |url=https://www.cambridge.org/core/journals/american-journal-of-international-law/article/abs/legal-aspects-of-the-geneva-protocol-of-1925/26453DA22053FCBB08BB4A520FFE9964 |journal=American Journal of International Law |language=en |volume=64 |issue=5 |pages=853–879 |doi=10.2307/2198921 |issn=0002-9300|url-access=subscription }}</ref> Similar treaties banned the [[First Austrian Republic]], the [[Kingdom of Bulgaria]], and the [[Kingdom of Hungary (1920–1946)|Kingdom of Hungary]] from chemical weapons, all belonging to the losing side, the [[Central powers]]. Russian [[bolshevik]]s and [[United Kingdom|Britain]] continued the [[Tambov Rebellion|use of chemical weapons]] in the [[Russian Civil War]] and [[Alleged British use of chemical weapons in Mesopotamia in 1920|possibly in the Middle East]] in 1920.

Three years after World War I, the Allies wanted to reaffirm the Treaty of Versailles, and in 1922 the [[United States]] introduced the Treaty relating to the Use of Submarines and Noxious Gases in Warfare at the [[Washington Naval Conference]].<ref name=ICRC-washington>{{cite web |url=http://www.icrc.org/ihl/INTRO/270 |title=Treaty relating to the Use of Submarines and Noxious Gases in Warfare. Washington, 6 February 1922 |publisher=International Committee of the Red Cross |year=2012 |access-date=30 April 2013}}</ref> Four of the war victors, the [[United States]], the [[United Kingdom]], the [[Kingdom of Italy]] and the [[Empire of Japan]], gave consent for [[ratification]], but it failed to enter into force as the [[French Third Republic]] objected to the [[submarine]] provisions of the treaty.<ref name=ICRC-washington/>

At the 1925 Geneva Conference for the Supervision of the International Traffic in Arms the French suggested a protocol for non-use of poisonous gases. The [[Second Polish Republic]] suggested the addition of bacteriological weapons.<ref>{{Cite web|url=https://www.the-trench.org/geneva-protocol-at-90-1|title=The Geneva Protocol at 90, Part 1: Discovery of the dual-use dilemma - The Trench - Jean Pascal Zanders|date=17 June 2015}}</ref> It was signed on 17 June.<ref name=coddy-2005/>

==Historical assessment==
[[File:Sarin test rabbit.jpg|thumb|upright|Rabbit used to check for leaks at a [[sarin]] production plant in 1970]]
Eric Croddy, assessing the Protocol in 2005, took the view that the historic record showed it had been largely ineffectual. Specifically it does not prohibit:<ref name=coddy-2005>{{cite book |pages=140–142 |url=https://books.google.com/books?id=ZzlNgS70OHAC |title=Weapons of Mass Destruction: An Encyclopedia of Worldwide Policy, Technology and History, Volume 1 |author=Eric A. Croddy, James J. Wirtz |publisher=ABC-CLIO |year=2005 |isbn=978-1851094905 |access-date=28 April 2013}}</ref>

* use against not-ratifying parties
* retaliation using such weapons, so effectively making it a no-first-use agreement
* use within a state's own borders in a civil conflict
* research and development of such weapons, or stockpiling them
In light of these shortcomings, Jack Beard notes that "the Protocol (...) resulted in a legal framework that allowed states to conduct [biological weapons] research, develop new biological weapons, and ultimately engage in [biological weapons] arms races".<ref name=":0" />

Additionally, the use of chemical weapons inside the nation's own territory against its citizens or subjects is not prohibited, such as those employed by [[Spain]] in [[Chemical weapons in the Rif War|the Rif War]] until 1927,<ref>{{cite web|url=https://international-review.icrc.org/articles/the-rif-war-a-forgotten-war-923|title=The Rif War: A forgotten war?|author=Pascal Daudin|date=June 2023|publisher=[[International Review of the Red Cross]]}}</ref><ref>{{Cite news |last=Noguer |first=Miquel |date=2005-07-02 |title=ERC exige que España pida perdón por el uso de armas químicas en la guerra del Rif |language=es |work=El País |url=https://elpais.com/diario/2005/07/03/catalunya/1120352849_850215.html |access-date=2023-01-06 |issn=1134-6582}}</ref> Japan against [[Seediq people|Seediq]] indigenous rebels in [[Taiwan]] (then part of the [[Japanese colonial empire]]) in 1930 during the [[Musha Incident]], Iraq against ethnic [[Kurds|Kurdish]] civilians in the [[Halabja massacre|1988 attack on Halabja]] during the [[Iran–Iraq War]], and [[Syria]] or [[Syrian opposition to Bashar al-Assad|Syrian opposition]] forces during [[Use of chemical weapons in the Syrian civil war|the Syrian civil war]].<ref>{{cite web|url=https://www.nti.org/education-center/treaties-and-regimes/protocol-prohibition-use-war-asphyxiating-poisonous-or-other-gasses-and-bacteriological-methods-warfare-geneva-protocol/#:~:text=The%20Geneva%20Protocol%2C%20implicitly%2C%20does,cover%20internal%20or%20civil%20conflicts.|title=Geneva Protocol: Protocol For the Prohibition of the Use In War of Asphyxiating, Poisonous, or Other Gases, And of Bacteriological Methods of Warfare (Geneva Protocol)|publisher=[[Nuclear Threat Initiative]]}}</ref>

Despite the U.S. having been a proponent of the protocol, the [[U.S. military]] and [[American Chemical Society]] lobbied against it, causing the [[U.S. Senate]] not to ratify the protocol until 1975, the same year when the United States ratified the [[Biological Weapons Convention]].<ref name=coddy-2005/><ref name=bunn-1969/>

==Violations==
Several state parties have deployed chemical weapons for combat in spite of the treaty. [[Italy]] used [[mustard gas]] against the [[Ethiopian Empire]] in the [[Second Italo-Ethiopian War]]. In [[World War II]], Germany employed chemical weapons in combat on several occasions along the [[Black Sea]], notably in [[Sevastopol]], where they used toxic smoke to force Soviet resistance fighters out of caverns below the city. They also used asphyxiating gas in the catacombs of [[Odesa]] in November 1941, following their [[Siege of Odessa (1941)|capture of the city]], and in late May 1942 during the [[Battle of the Kerch Peninsula]] in eastern [[Crimea]], perpetrated by the Wehrmacht's Chemical Forces and organized by a special detail of [[Schutzstaffel|SS]] troops with the help of a field engineer battalion.<ref name="nazgas">{{cite book|last1=Israelyan|first1=Victor|title=On the Battlefields of the Cold War: A Soviet Ambassador's Confession|pages=339|url=https://books.google.com/books?id=sSDP-XiRMwUC&pg=PA339|isbn=978-0271047737|date=2010-11-01|publisher=Penn State Press }}</ref> After the battle in mid-May 1942, the Germans gassed and killed almost 3,000 of the besieged and non-evacuated [[Red Army]] soldiers and Soviet civilians hiding in a series of caves and tunnels in the nearby [[Defense of the Adzhimushkay quarry|Adzhimushkay quarry]].<ref>[[Catherine Merridale|Merridale, Catherine]], Ivan's War, Faber & Faber: pp. 148–150.</ref>

During the 1980-1988 Iran-Iraq War, Iraq is known to have employed a variety of chemical weapons against Iranian forces. Some 100,000 Iranian troops were casualties of Iraqi chemical weapons during the war.<ref>{{citation|last=Fassihi|first=Farnaz|title=In Iran, grim reminders of Saddam's arsenal|date=October 27, 2002|url=http://www.nj.com/specialprojects/index.ssf?/specialprojects/mideaststories/me1209.html|journal=New Jersey Star Ledger|access-date=27 July 2023|archive-date=13 December 2007|archive-url=https://web.archive.org/web/20071213061050/http://www.nj.com/specialprojects/index.ssf?%2Fspecialprojects%2Fmideaststories%2Fme1209.html|url-status=dead}}</ref><ref>{{citation|author=Paul Hughes|title=It's like a knife stabbing into me|date=January 21, 2003|url=http://www.thestar.co.za/index.php?fArticleId=39470|work=The Star (South Africa)}}</ref><ref>{{citation|last=Sciolino|first=Elaine|title=Iraq Chemical Arms Condemned, but West Once Looked the Other Way|date=February 13, 2003|url=http://www.commondreams.org/headlines03/0213-05.htm|journal=[[The New York Times]]|archive-url=https://web.archive.org/web/20130527105217/http://www.commondreams.org/headlines03/0213-05.htm|archive-date=May 27, 2013|url-status=dead}}</ref>

==Subsequent interpretation of the protocol==
In 1966, [[United Nations General Assembly resolution]] 2162B called for, without any dissent, all states to strictly observe the protocol. In 1969, United Nations General Assembly resolution 2603 (XXIV) declared that the prohibition on use of chemical and biological weapons in international armed conflicts, as embodied in the protocol (though restated in a more general form), were generally recognized rules of international law.<ref>{{cite web |url=http://www.worldlii.org/int/other/UNGARsn/1969/110.pdf |title=2603 (XXIV). Question of chemical and bacteriological (biological) weapons |publisher=United Nations General Assembly |date=16 December 1969 |access-date=24 August 2013 |quote=use in international armed conflicts of: (a) Any chemical agents of warfare - chemical substances, whether gaseous, liquid or solid - which might be employed because of their direct toxic effects on man, animals or plants; (b) Any biological agents of warfare - living organisms, whatever their nature, or infective material derived from them - which are intended to cause disease or death in man, animals or plants, and which depend for their effects on their ability to multiply in the person, animal or plant attacked.}}</ref> Following this, there was discussion of whether the main elements of the protocol now form part of [[customary international law]], and now this is widely accepted to be the case.<ref name=bunn-1969/><ref name=vertic-20120517>{{cite web |url=http://www.vertic.org/pages/posts/the-1925-geneva-protocol-goes-digital-298.php |title=The 1925 Geneva Protocol goes digital |author=Angela Woodward |publisher=[[VERTIC]] |date=17 May 2012 |access-date=26 August 2013}}</ref>

There have been differing interpretations over whether the protocol covers the use of harassing agents, such as [[adamsite]] and [[tear gas]], and [[defoliants]] and [[herbicides]], such as [[Agent Orange]], in warfare.<ref name=bunn-1969/><ref name=state-2002>{{cite web |url=https://2009-2017.state.gov/t/isn/4784.htm |title=Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or Other Gases and of Bacteriological Methods of Warfare (Geneva Protocol) |publisher=U.S. Department of State |date=25 September 2002 |access-date=24 August 2013}}</ref> The 1977 [[Environmental Modification Convention]] prohibits the military use of environmental modification techniques having widespread, long-lasting or severe effects. Many states do not regard this as a complete ban on the use of herbicides in warfare, but it does require case-by-case consideration.<ref>{{cite web |url=http://www.icrc.org/customary-ihl/eng/docs/v2_rul_rule76 |title=Practice Relating to Rule 76. Herbicides |publisher=International Committee of the Red Cross |year=2013 |access-date=24 August 2013}}</ref> The 1993 [[Chemical Weapons Convention]] effectively banned riot control agents from being used as a method of warfare, though still permitting it for [[riot control]].<ref>{{cite web |url=http://www.icrc.org/customary-ihl/eng/docs/v2_cha_chapter24_rule75 |title=Practice Relating to Rule 75. Riot Control Agents |publisher=International Committee of the Red Cross |year=2013 |access-date=24 August 2013}}</ref>

In recent times, the protocol had been interpreted to cover non-international armed conflicts as well international ones. In 1995, an appellate chamber in the [[International Criminal Tribunal for the former Yugoslavia]] stated that "there had undisputedly emerged a general consensus in the international community on the principle that the use of chemical weapons is also prohibited in internal armed conflicts." In 2005, the [[International Committee of the Red Cross]] concluded that customary international law includes a ban on the use of chemical weapons in internal as well as international conflicts.<ref name=vertic-20120808>{{cite web |url=http://www.vertic.org/pages/posts/syria-international-law-and-the-use-of-chemical-weapons-345.php |title=Syria: international law and the use of chemical weapons |author=Scott Spence and Meghan Brown |publisher=[[VERTIC]] |date=8 August 2012 |access-date=26 August 2013 |archive-date=26 September 2013 |archive-url=https://web.archive.org/web/20130926173659/http://www.vertic.org/pages/posts/syria-international-law-and-the-use-of-chemical-weapons-345.php |url-status=dead }}</ref>

However, such views drew general criticism from legal authors. They noted that much of the [[List of chemical arms control agreements|chemical arms control agreements]] stems from the context of ''international'' conflicts. Furthermore, the application of customary international law to banning chemical warfare in non-international conflicts fails to meet two requirements: state practice and [[Opinio juris sive necessitatis|''opinio juris'']].  Jillian Blake & Aqsa Mahmud cited the periodic use of chemical weapons in non-international conflicts since the end of WWI (as [[Geneva Protocol#Historical assessment|stated above]]) as well as the lack of existing [[international humanitarian law]] (such as the [[Geneva Conventions]]) and national legislation and manuals prohibiting using them in such conflicts.<ref>{{cite web|title=A Legal "Red Line"? Syria and the Use of Chemical Weapons in Civil Conflict|url=https://www.uclalawreview.org/a-legal-red-line-syria-and-the-use-of-chemical-weapons-in-civil-conflict/|author= Jillian Blake & Aqsa Mahmud|date=October 15, 2013|website=UCLA Law Review}}</ref> Anne Lorenzat stated the 2005 ICRC study was rooted in "'political and operational issues rather than legal ones".<ref>{{cite web|title=The Current State of Customary International Law with regard to the Use of Chemical Weapons in Non-International Armed Conflicts|url=http://www.ismllw.org/REVIEW/2017-2018%20ART%20Lorenzat.php|author=Anne Lorenzat|date=2017–2018|website=The Military Law and the Law of War Review}}</ref>

==State parties==
[[File:Geneva Protocol parties.svg|right|400px|thumb|Parties to the Geneva Protocol<br/>{{legend|#00AA00|Parties with no reservations}} {{legend|#0000FF|Parties with withdrawn reservations}} {{legend|#EEEE00|Parties with implicit reservations}} {{legend|orange|Parties with unwithdrawn reservations limiting the applicability of provisions of the Protocol}} {{legend|#FF1111|Non-parties}}]]

To become party to the Protocol, states must deposit an instrument with the government of [[France]] (the [[depositary]] power). Thirty-eight states originally signed the Protocol. France was the first signatory to ratify the Protocol on 10 May 1926. El Salvador, the final signatory to ratify the Protocol, did so on 26 February 2008. As of April 2021, 146 states have ratified, acceded to, or succeeded to the Protocol,<ref name=unoda>{{cite web|url=https://treaties.unoda.org/t/1925|title=Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of Warfare|publisher=[[United Nations Office of Disarmament Affairs]]|access-date=24 July 2013}}</ref> most recently Colombia on 24 November 2015.

===Reservations===
A number of countries submitted [[Reservation (law)|reservations]] when becoming parties to the Geneva Protocol, declaring that they only regarded the non-use obligations as applying with respect to other parties to the Protocol and/or that these obligations would cease to apply with respect to any state, or its allies, which used the prohibited weapons. Several Arab states also declared that their ratification did not constitute recognition of, or diplomatic relations with, [[Israel]], or that the provision of the Protocol were not binding with respect to Israel.

Generally, reservations not only modify treaty provisions for the reserving party, but also symmetrically modify the provisions for previously ratifying parties in dealing with the reserving party.<ref name=bunn-1969/>{{rp|394}}  Subsequently, numerous states have withdrawn their reservations, including the former [[Czechoslovakia]] in 1990 prior to its [[Dissolution of Czechoslovakia|dissolution]],<ref name=czun>{{cite web|url=http://disarmament.un.org/treaties/a/1925/czechrepublic/suc/paris|title=Czech Republic: Succession to 1925 Geneva Protocol
|access-date=2014-07-26|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref> or the Russian reservation on biological weapons that "preserved the right to retaliate in kind if attacked" with them, which was dissolved by [[President Yeltsin]].<ref name=kelly02>{{cite book|last1=Kelly|first1=David|chapter-url=http://www.vertic.org/media/Archived_Publications/Yearbooks/2002/VY02_Kelly.pdf |chapter=The Trilateral Agreement: lessons for biological weapons verification]|editor1-last=Findlay|editor1-first=Trevor|editor2-last=Meier|editor2-first=Oliver|editor1-link=Trevor Findlay|title=Verification Yearbook 2002|date=2002|publisher=Verification Research, Training and Information Centre (VERTIC)|location=London|isbn=978-1-899548-35-4|pages=93–109|url=https://www.files.ethz.ch/isn/13529/VY02_FULL.pdf}}</ref>

According to the [[Vienna Convention on Succession of States in respect of Treaties]], states which succeed to a treaty after gaining independence from a state party "shall be considered as maintaining any reservation to that treaty which was applicable at the date of the succession of States in respect of the territory to which the succession of States relates unless, when making the notification of succession, it expresses a contrary intention or formulates a reservation which relates to the same subject matter as that reservation."  While some states have explicitly either retained or renounced their reservations inherited on succession, states which have not clarified their position on their inherited reservations are listed as "implicit" reservations.

{| class="wikitable sortable"
!Party<ref name=dep/><ref name=unoda/><ref>{{cite web|url=https://www.eda.admin.ch/eda/fr/dfae/politique-exterieure/droit-international-public/traites-internationaux/banque-donnees-traites-internationaux/detailansicht-staatsvertrag.ggst0_51.contract19250020.html?_charset_=UTF-8|title=Le traité international en detail|access-date=2018-05-21|publisher=[[Federal Department of Foreign Affairs|Federal Department of Foreign Affairs of Switzerland]]}}</ref><ref name=usdos>{{cite web|url=https://2009-2017.state.gov/t/isn/4784.htm|title=Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of Warfare (Geneva Protocol)|access-date=31 July 2013|publisher=[[United States Department of State]]}}</ref><ref name=ICRC>{{cite web|url=http://www.icrc.org/applic/ihl/ihl.nsf/States.xsp?xp_viewStates=XPages_NORMStatesParties&xp_treatySelected=280 |title=Protocol for the Prohibition of the Use of Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of Warfare. Geneva, 17 June 1925 |publisher=International Committee of the Red Cross |access-date=31 July 2013}}</ref><ref>{{cite web|url=http://dosfan.lib.uic.edu/acda/treaties/geneva7.txt|title=States parties to the Protocol for the prohibition of the use in war of asphyxiating, poisonous or other gases, and of bacteriological methods of warfare, Done at Geneva 17 June 1925|publisher=[[University of Illinois at Chicago]]|access-date=5 August 2013|archive-url=https://web.archive.org/web/20150407003400/http://dosfan.lib.uic.edu/acda/treaties/geneva7.txt|archive-date=7 April 2015|url-status=dead}}</ref><ref>{{cite web|url=http://treaties.un.org/Pages/showDetails.aspx?objid=0800000280167ca8|title=Protocol for the prohibition of the use in war of asphyxiating, poisonous or other gases, and of bacteriological methods of warfare|publisher=[[United Nations Treaty Series]]|access-date=5 August 2013}}</ref><ref>{{cite web|url=http://www.fas.org/nuke/control/geneva/text/geneva1.htm|title=Protocol for the prohibition of the use in war of asphyxiating, poisonous or other gases, and of bacteriological methods of warfare|publisher=[[Federation of American Scientists]]|access-date=5 August 2013}}</ref><ref>{{cite web|url=http://www.admin.ch/opc/fr/classified-compilation/19250020/index.html|title=Protocole concernant la prohibition d'emploi à la guerre de gaz asphyxiants, toxiques ou similaires et de moyens bactériologiques|date=2013-08-15|access-date=2014-07-13|publisher=Government of Switzerland}}</ref><ref>{{cite web|url=http://www.admin.ch/opc/fr/official-compilation/2005/1209.pdf|title=Protocole du 17 juin 1925 concernant la prohibition d'emploi à la guerre de gaz asphyxiants, toxiques ou similaires et de moyens bactériologiques|year=2004|access-date=2014-07-13|publisher=Government of Switzerland}}</ref><ref>{{cite web|url=http://www.admin.ch/opc/fr/classified-compilation/19250020/201308150000/0.515.105.pdf|title=Protocole concernant la prohibition d'emploi à la guerre de gaz asphyxiants, toxiques ou similaires et de moyens bactériologiques|date=2013-08-15|access-date=2014-07-13|publisher=Government of Switzerland|archive-date=23 May 2018|archive-url=https://web.archive.org/web/20180523011329/https://www.admin.ch/opc/fr/classified-compilation/19250020/201308150000/0.515.105.pdf|url-status=dead}}</ref>
!Signed<ref>{{cite journal|url=http://treaties.un.org/doc/Publication/UNTS/LON/Volume%2094/v94.pdf|journal=League of Nations Treaty Series - Publication of Treaties and International Engagements Registered with the Secretariat of the League of Nations|volume=XCIV|year=1929|issue=1,2,3 and 4|access-date=28 July 2013|publisher=[[League of Nations]]|title=No. 2138 - Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare. Signed at Geneva, 17 June 1925.|pages=65–74}}</ref>
!Deposited
! class="unsortable" style="text-size: small" | Reservations<ref name=dep/><ref name=bunn-1969>{{cite journal|url=http://iis-db.stanford.edu/pubs/22365/Bunn_Banning_Poison_Gas_and_Germ_Warfare.pdf |title=Banning Poison Gas and Germ Warfare: Should the United States Agree |last=Bunn |first=George |journal=[[Wisconsin Law Review]] |volume=1969 |issue=2 |pages=375–420 |year=1969 |access-date=5 August 2013 |url-status=dead |archive-url=https://web.archive.org/web/20140702004808/http://iis-db.stanford.edu/pubs/22365/Bunn_Banning_Poison_Gas_and_Germ_Warfare.pdf |archive-date=2 July 2014 |df=dmy }}</ref><ref name=usdos/><ref name=ICRC/><ref>{{cite web|url=http://www.bwc2011.info/BB2011-by-doc/1/GP-Res.pdf|title=Seventh BWC Review Conference Briefing Book|year=2011|publisher=[[Biological Weapons Convention]]|access-date=17 November 2014}}</ref><ref>{{cite web |title=High Contracting Parties to the Geneva Protocol |url=http://www.sipri.org/contents/expcon/cbwarfare/cbw_research_doc/cbw_historical/cbw-hist-geneva-parties.html |archive-url= |archive-date= |access-date=5 August 2013 |publisher=[[SIPRI]]}}</ref><ref>{{cite book|url=https://books.google.com/books?id=k5FqSAX9HyMC|title=The Laws of Armed Conflicts: A Collection of Conventions, Resolutions, and Other Documents|last1=Schindler|first1=Dietrich|last2=Toman|first2=Jiří|year=1988|access-date=5 August 2013|publisher=[[Brill Publishers]]|pages=115–127|isbn=9024733065}}</ref><ref>{{cite web|url= http://www.bwc2011.info/BB2011-by-doc/1/GP-Res.pdf|title=Geneva Protocol reservations|access-date=5 August 2013|publisher=Biological Weapons Convention Review Conference}}</ref><ref>{{cite book|url=https://books.google.com/books?id=V3vdfv6y-q8C|editor1-last=Papanicolopulu|editor1-first=Irini|editor2-last=Scovazzi|editor2-first=Tullio|year=2006|title=Quale diritto nei conflitti armati?|access-date=5 August 2013|publisher=Giuffrè Editore|pages=231–237|isbn=9788814130625|language=it}}</ref>
! class="unsortable" | Notes
|-
|{{flag|Afghanistan}}
|
|{{dts|2 September 1986}}
|—
|
|-
|{{flag|Albania}}
|
|{{dts|12 December 1989}}
|—
|
|-style="background:orange;"
|{{flag|Algeria}}
|
|{{dts|14 January 1992}}
|
{|
|<ref group="Reservation" name="a">Binding only with regards to states which have ratified or acceded to the protocol.</ref><br/><ref group="Reservation" name="b">Ceases to be binding in regards to any state, and its allies, which does not observe the prohibitions of the protocol.</ref>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/algeria/acc/paris|title=Algeria: Accession to 1925 Geneva Protocol|access-date=27 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:orange;"
|{{flag|Angola}}
|
|{{dts|30 October 1990}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/angola/acc/paris|title=Angola: Accession to 1925 Geneva Protocol|access-date=27 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:#EEEE00;"
|{{flag|Antigua and Barbuda}}
|
|{{dts|1 February 1989}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|[[Succession of states|Succeeded]] from the United Kingdom.
|-
|{{flag|Argentina}}
|
|{{dts|8 May 1969}}
|—
|
|-
|{{flag|Armenia}}
|
|{{dts|13 March 2018}}
|—
|
|-style="background:#6495ED;"
|{{flag|Australia}}
|
|{{dts|22 January 1930}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1986.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/australia/acc/paris|title=Australia: Accession to 1925 Geneva Protocol|access-date=20 September 2014|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Austria}}
|{{dts|17 June 1925}}
|{{dts|9 May 1928}}
|—
|
|-style="background:orange;"
|{{flag|Bahrain}}
|
|{{dts|9 November 1988}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/><br/><ref group="Reservation" name="c">Does not constitute recognition of, or establishing any relations with, [[Israel]].</ref>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/bahrain/acc/paris|title=Bahrain: Accession to 1925 Geneva Protocol|access-date=27 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:orange;"
|{{flag|Bangladesh}}
|
|{{dts|20 May 1989}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/bangladesh/acc/paris|title=Bangladesh: Accession to 1925 Geneva Protocol|access-date=27 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:#6495ED;"
|{{flag|Barbados}}
|
|{{dts|16 July 1976}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrew the reservations made by the United Kingdom on succession.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/barbados/suc/paris|title=Barbados: Succession to 1925 Geneva Protocol|access-date=27 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|Succeeded from the United Kingdom.
|-style="background:#6495ED;"
|{{flag|Belgium}}
|{{dts|17 June 1925}}
|{{dts|4 December 1928}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1997.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/belgium/rat/paris|title=Belgium: Ratification of 1925 Geneva Protocol|access-date=27 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Benin}}
|
|{{dts|4 December 1986}}
|—
|
|-
|{{flag|Bhutan}}
|
|{{dts|12 June 1978}}
|—
|
|-
|{{flag|Bolivia}}
|
|{{dts|14 January 1985}}
|—
|
|-
|{{flag|Brazil}}
|{{dts|17 June 1925}}
|{{dts|28 August 1970}}
|—
|
|-style="background:#6495ED;"
|{{flag|Bulgaria}}
|{{dts|17 June 1925}}
|{{dts|7 March 1934}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>|| Withdrawn in 1991.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/bulgaria/rat/paris|title=Bulgaria: Ratification of 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Burkina Faso}}
|
|{{dts|1 March 1971}}
|—
|Ratified as the [[Republic of Upper Volta]].
|-style="background:orange;"
|{{flag|Cambodia}}
|
|{{dts|15 March 1983}}
|<ref group="Reservation" name="b"/>
|The Protocol was ratified by the [[Coalition Government of Democratic Kampuchea]] in exile in 1983. 13 states (including the depositary France) objected to their ratification, and considered it legally invalid. In 1993, the [[Kingdom of Cambodia]] stated in a [[note verbale]] that it considered itself bound by the provisions of the Protocol.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/cambodia/acc/paris|title=Cambodia: Accession to 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|-
|{{flag|Cameroon}}
|
|{{dts|21 April 1989}}
|—
|
|-style="background:#6495ED;"
|{{flag|Canada}}
|{{dts|17 June 1925}}
|{{dts|6 May 1930}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1991 as regards bacteriological agents, and completely withdrawn in 1999.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/canada/rat/paris|title=Canada: Ratification of 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Cape Verde}}
|
|{{dts|20 May 1991}}
|—
|
|-
|{{flag|Central African Republic}}
|
|{{dts|30 July 1970}}
|—
|
|-style="background:#6495ED;"
|{{flag|Chile}}
|{{dts|17 June 1925}}
|{{dts|2 July 1935}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1991.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/chile/rat/paris|title=Chile: Ratification of 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:orange;"
|{{flag|China}}
|
|{{dts|7 August 1929}}
|
{|
|<ref group="Reservation" name="b"/>||Made on succession.<ref name=china/>
|}
| Ratified as the [[Republic of China (1912–1949)|Republic of China]], from which the [[People's Republic of China]] succeeded on 13 July 1952.<ref name=china>{{cite web|url=http://disarmament.un.org/treaties/a/1925/china/suc/paris|title=China: Succession to 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|-
|{{flag|Colombia}}
|
|{{dts|24 November 2015}}
|—
|
|-
|{{flag|Costa Rica}}
|
|{{dts|17 June 2009}}
|—
|
|-
|{{flag|Côte d'Ivoire}}
|
|{{dts|27 July 1970}}
|—
|
|-
|{{flag|Croatia}}
|
|{{dts|25 September 2006}}
|—
|
|-
|{{flag|Cuba}}
|
|{{dts|24 May 1966}}
|—
|
|-style="background:#EEEE00;"
|{{flag|Cyprus}}
|
|{{dts|29 November 1966}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-
|{{flag|Czech Republic}}
|
|{{dts|19 September 1993}}
|
{|
|<ref group="Reservation" name="b"/>||Withdrawn prior to succession.
|}
|Succeeded from [[Czechoslovakia]], which ratified the protocol on 16 August 1938.
|-
|{{flag|Denmark}}
|{{dts|17 June 1925}}
|{{dts|5 May 1930}}
|—
|
|-
|{{flag|Dominican Republic}}
|
|{{dts|4 December 1970}}
|—
|
|-
|{{flag|Ecuador}}
|
|{{dts|10 September 1970}}
|—
|
|-
|{{flag|Egypt}}
|{{dts|17 June 1925}}
|{{dts|6 December 1928}}
|—
|
|-
|{{flag|El Salvador}}
|{{dts|17 June 1925}}
|{{dts|12 January 2010}}
|—
|
|-
|{{flag|Equatorial Guinea}}
|
|{{dts|16 May 1989}}
|—
|
|-style="background:#6495ED;"
|{{flag|Estonia}}
|{{dts|17 June 1925}}
|{{dts|28 August 1931}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1999.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/estonia/rat/paris|title=Estonia: Ratification of 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{Flag|Eswatini}}
|
|{{dts|10 July 1991}}
|
|
|-
|{{flag|Ethiopia}}
|{{dts|17 June 1925}}
|{{dts|7 October 1935}}
|—
|
|-style="background:orange;"
|{{flag|Fiji}}
|
|{{dts|21 March 1973}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Retained the United Kingdom's reservations on succession.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/fiji/suc/paris|title=Fiji: Succession to 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|Succeeded from the United Kingdom.
|-
|{{flag|Finland}}
|{{dts|17 June 1925}}
|{{dts|26 June 1929}}
|—
|
|-style="background:#6495ED;"
|{{flag|France}}
|{{dts|17 June 1925}}
|{{dts|10 May 1926}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1996.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/france/rat/paris|title=France: Ratification of 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:#EEEE00;"
|{{flag|Gambia}}
|
|{{dts|5 November 1966}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-
|{{flag|Germany}}
|{{dts|17 June 1925}}
|{{dts|25 April 1929}}
|—
|
|-
|{{flag|Ghana}}
|
|{{dts|2 May 1967}}
|—
|
|-
|{{flag|Greece}}
|{{dts|17 June 1925}}
|{{dts|30 May 1931}}
|—
|
|-style="background:#EEEE00;"
|{{flag|Grenada}}
|
|{{dts|3 January 1989}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-
|{{flag|Guatemala}}
|
|{{dts|3 May 1983}}
|—
|
|-
|{{flag|Guinea-Bissau}}
|
|{{dts|20 May 1989}}
|—
|
|-
|{{flag|Holy See}}
|
|{{dts|12 October 1966}}
|—
|
|-
|{{flag|Hungary}}
|{{dts|17 June 1925}}
|{{dts|11 October 1952}}
|—
|
|-
|{{flag|Iceland}}
|
|{{dts|19 December 1966}}
|—
|
|-style="background:orange;"
|{{flag|India}}
|{{dts|17 June 1925}}
|{{dts|9 April 1930}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/india/rat/paris|title=India: Ratification of 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:#EEEE00;"
|{{flag|Indonesia}}
|
|{{dts|14 January 1971}}
|
{|
|<ref group="Reservation" name="d"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the Netherlands.
|-
|{{flag|Iran}}
|
|{{dts|4 July 1929}}
|—
|
|-style="background:orange;"
|{{flag|Iraq}}
|
|{{dts|18 August 1931}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/iraq/acc/paris|title=Iraq: Accession to 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:#6495ED;"
|{{flag|Ireland}}
|
|{{dts|18 August 1930}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1972.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/ireland/acc/paris|title=Ireland: Accession to 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:orange;"
|{{flag|Israel}}
|
|{{dts|10 February 1969}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/israel/acc/paris|title=Israel: Accession to 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Italy}}
|{{dts|17 June 1925}}
|{{dts|3 April 1928}}
|—
|
|-style="background:#EEEE00;"
|{{flag|Jamaica}}
|
|{{dts|28 July 1970}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-
|{{flag|Japan}}
|{{dts|17 June 1925}}
|{{dts|21 May 1970}}
|—
|
|-style="background:orange;"
|{{flag|Jordan}}
|
|{{dts|20 January 1977}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/><br/><ref group="Reservation" name="c"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/jordan/acc/paris|title=Jordan: Accession to 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Kazakhstan}}
|
|{{dts|20 April 2020}}
|—
|
|-
|{{flag|Kenya}}
|
|{{dts|17 June 1970}}
|—
|
|-style="background:orange;"
|{{flag|North Korea|name=Korea, Democratic People's Republic of}}
|
|{{dts|22 December 1988}}
|
{|
|<ref group="Reservation" name="b"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/democraticpeoplesrepublicofkorea/acc/paris|title=Democratic People's Republic of Korea: Accession to 1925 Geneva Protocol|access-date=29 August 2017|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:orange;"
|{{flag|South Korea|name=Korea, Republic of}}
|
|{{dts|29 December 1988}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Reservation 2 withdrawn in 2002 as regards biological agents covered by the [[Biological Weapons Convention|BWC]].
|}
|
|-style="background:orange;"
|{{flag|Kuwait}}
|
|{{dts|15 December 1971}}
|
{|
|<ref group="Reservation" name="c"/><br/><ref group="Reservation" name="f">Ceases to be binding in the case of a violation.</ref>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/kuwait/acc/paris|title=Kuwait: Accession to 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Kyrgyzstan}}
|
|{{dts|29 June 2020}}
|—
|
|-
|{{flag|Laos}}
|
|{{dts|16 January 1989}}
|—
|
|-
|{{flag|Latvia}}
|{{dts|17 June 1925}}
|{{dts|3 June 1931}}
|—
|
|-
|{{flag|Lebanon}}
|
|{{dts|15 April 1969}}
|—
|
|-style="background:#EEEE00;"
|{{flag|Lesotho}}
|
|{{dts|10 March 1972}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-
|{{flag|Liberia}}
|
|{{dts|2 April 1927}}
|—
|
|-style="background:orange;"
|{{flag|Libya}}
|
|{{dts|21 December 1971}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/><br/><ref group="Reservation" name="c"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/libya/acc/paris|title=Libya: Accession to 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Liechtenstein}}
|
|{{dts|16 May 1991}}
|—
|
|-
|{{flag|Lithuania}}
|{{dts|17 June 1925}}
|{{dts|15 June 1933}}
|—
|
|-
|{{flag|Luxembourg}}
|{{dts|17 June 1925}}
|{{dts|1 September 1936}}
|—
|
|-
|{{flag|North Macedonia}}
|
|{{dts|20 August 2015}}
|—
|
|-
|{{flag|Madagascar}}
|
|{{dts|2 August 1967}}
|—
|
|-
|{{flag|Malawi}}
|
|{{dts|4 September 1970}}
|—
|
|-
|{{flag|Malaysia}}
|
|{{dts|7 December 1970}}
|—
|
|-
|{{flag|Maldives}}
|
|{{dts|27 December 1966}}
|—
|
|-style="background:#EEEE00;"
|{{flag|Malta}}
|
|{{dts|9 October 1970}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-style="background:#EEEE00;"
|{{flag|Mauritius}}
|
|{{dts|23 December 1970}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-
|{{flag|Mexico}}
|
|{{dts|28 March 1932}}
|—
|
|-
|{{flag|Moldova}}
|
|{{dts|14 January 2011}}
|—
|
|-
|{{flag|Monaco}}
|
|{{dts|15 December 1966}}
|—
|
|-style="background:#6495ED;"
|{{flag|Mongolia}}
|
|{{dts|18 November 1968}}
|
{|
|<ref group="Reservation" name="b"/>|||Withdrawn in 1990.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/mongolia/acc/paris|title=Mongolia: Accession to 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Morocco}}
|
|{{dts|7 October 1970}}
|—
|
|-
|{{flag|Nepal}}
|
|{{dts|7 May 1969}}
|—
|
|-style="background:#6495ED;"
|{{flag|Netherlands}}
|{{dts|17 June 1925}}
|{{dts|31 October 1930}}
|
{|
|<ref group="Reservation" name="d">Ceases to be binding as to the use of chemical weapons in regards to any enemy state which does not observe the prohibitions of the protocol.</ref>||Withdrawn in 1995.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/netherlands/rat/paris|title=Netherlands: Ratification of 1925 Geneva Protocol|access-date=28 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:#6495ED;"
|{{flag|New Zealand}}
|
|{{dts|22 January 1930}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1989.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/newzealand/acc/paris|title=New Zealand: Accession to 1925 Geneva Protocol|access-date=29 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>

|}
|
|-
|{{flag|Nicaragua}}
|{{dts|17 June 1925}}
|{{dts|5 October 1990}}
|—
|
|-style="background:#EEEE00;"
|{{flag|Niger}}
|
|{{dts|5 April 1967}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from France.
|-style="background:orange;"
|{{flag|Nigeria}}
|
|{{dts|9 October 1968}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/nigeria/acc/paris|title=Nigeria: Accession to 1925 Geneva Protocol|access-date=29 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Norway}}
|{{dts|17 June 1925}}
|{{dts|27 July 1932}}
|—
|
|-style="background:#EEEE00;"
|{{flag|Pakistan}}
|
|{{dts|15 April 1960}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from India.
|-
|{{flag|Palestine}}
|
|{{dts|19 January 2018}}
|—
|
|-
|{{flag|Panama}}
|
|{{dts|26 November 1970}}
|—
|
|-style="background:orange;"
|{{flag|Papua New Guinea}}
|
|{{dts|2 September 1980}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Retained Australia's reservations on succession.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/papuanewguinea/suc/paris|title=Papua New Guinea: Succession to 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|Succeeded from Australia.
|-
|{{flag|Paraguay}}
|
|{{dts|22 October 1933}}
|—
|
|-
|{{flag|Peru}}
|
|{{dts|5 June 1985}}
|—
|
|-
|{{flag|Philippines}}
|
|{{dts|29 May 1973}}
|—
|
|-
|{{flag|Poland}}
|{{dts|17 June 1925}}
|{{dts|4 February 1929}}
|—
|
|-style="background:#6495ED;"
|{{flag|Portugal}}
|{{dts|17 June 1925}}
|{{dts|1 July 1930}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Reservation 2 withdrawn in 2003, and reservation 1 withdrawn in 2014.
|}
|
|-
|{{flag|Qatar}}
|
|{{dts|16 September 1976}}
|—
|
|-style="background:#6495ED;"
|{{flag|Romania}}
|{{dts|17 June 1925}}
|{{dts|23 August 1929}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1991.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/romania/rat/paris|title=Romania: Ratification of 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:#6495ED;"
|{{flag|Russia}}
|{{dts|17 June 1925}}
|{{dts|5 April 1928}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 2001.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/russianfederation/rat/paris|title=Russian Federation: Ratification of 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|Ratified as the [[Union of Soviet Socialist Republics]].
|-style="background:#EEEE00;"
|{{flag|Rwanda}}
|
|{{dts|21 March 1964}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from Belgium.
|-style="background:#EEEE00;"
|{{flag|Saint Kitts and Nevis}}
|
|{{dts|26 October 1989}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-style="background:#EEEE00;"
|{{flag|Saint Lucia}}
|
|{{dts|21 December 1988}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-style="background:#EEEE00;"
|{{flag|Saint Vincent and the Grenadines}}
|
|{{dts|23 April 1999}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-
|{{flag|Saudi Arabia}}
|
|{{dts|27 January 1971}}
|—
|
|-
|{{flag|Senegal}}
|
|{{dts|15 June 1977}}
|—
|
|-style="background:#EEEE00;"
|{{flag|Serbia}}
|
|{{dts|20 January 2003}}
|
{|
|<ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}  Serbia's Parliament voted to withdraw their reservation in May 2009<ref>{{cite web|url=http://www.opbw.org/rev_cons/7rc/BWC_CONF.VII_Press_111205_E.pdf|title=Seventh Review Conference of Biological Weapons Convention|date=5 December 2011|access-date=10 November 2013|archive-date=24 September 2015|archive-url=https://web.archive.org/web/20150924060749/http://www.opbw.org/rev_cons/7rc/BWC_CONF.VII_Press_111205_E.pdf|url-status=dead}}</ref> and the withdrawal was announced in 2010, but the depositary has not been notified.<ref>{{cite web|url=http://www.brad.ac.uk/acad/sbtwc/key7rev/article_VIII.pdf|title=Article VII: Geneva Protocol Obligations and the BTWC|last1=Sims|first1=Nicholas|last2=Pearson|first2=Graham|last3=Woodward|first3=Angela|access-date=10 August 2013|archive-url=https://web.archive.org/web/20150923194231/http://www.brad.ac.uk/acad/sbtwc/key7rev/article_VIII.pdf|archive-date=23 September 2015|url-status=dead}}</ref>
|}
|Succeeded as the [[Federal Republic of Yugoslavia]] from the [[Socialist Federal Republic of Yugoslavia]],{{#tag:ref|Although the FR Yugoslavia claimed to be the continuator state of the SFR of Yugoslavia, the [[United Nations General Assembly]] did not accept this and forced them to reapply for membership.|group=Note}} which had ratified the protocol as the [[Kingdom of Serbs, Croats and Slovenes]] on 12 April 1929.
|-
|{{flag|Sierra Leone}}
|
|{{dts|20 February 1967}}
|—
|
|-
|{{flag|Slovakia}}
|
|{{dts|1 July 1997}}{{#tag:ref|Listed as 28 October 1997 by the [[United Nations Office of Disarmament Affairs]].<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/slovakia/suc/paris|title=Slovakia: Succession to 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>|group=Note}}
|
{|
|<ref group="Reservation" name="b"/>||Withdrawn prior to succession.
|}
|Succeeded from Czechoslovakia, which ratified the protocol on 16 August 1938.
|-
|{{flag|Slovenia}}
|
|{{dts|8 April 2008}}
|—
|
|-style="background:orange;"
|{{flag|Solomon Islands}}
|
|{{dts|1 June 1981}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Retained the United Kingdom's reservations on succession.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/solomonislands/suc/paris|title=Solomon Islands: Succession to 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|Succeeded from the United Kingdom.
|-style="background:#6495ED;"
|{{flag|South Africa}}
|
|{{dts|24 May 1930}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1996.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/southafrica/acc/paris|title=South Africa: Accession to 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:#6495ED;"
|{{flag|Spain}}
|{{dts|17 June 1925}}
|{{dts|22 August 1929}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Withdrawn in 1992.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/spain/rat/paris|title=Spain: Ratification of 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Sri Lanka}}
|
|{{dts|20 January 1954}}
|—
|Ratified as the [[Dominion of Ceylon]].
|-
|{{flag|Sudan}}
|
|{{dts|17 December 1980}}
|—
|
|-
|{{flag|Sweden}}
|{{dts|17 June 1925}}
|{{dts|25 April 1930}}
|—
|
|-
|{{flag|Switzerland}}
|{{dts|17 June 1925}}
|{{dts|12 July 1932}}
|—
|
|-style="background:orange;"
|{{flag|Syria}}
|
|{{dts|17 December 1968}}
|
{|
|<ref group="Reservation" name="c"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/syrianarabrepublic/acc/paris|title=Syrian Arab Republic: Accession to 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Tajikistan}}
|
|{{dts|15 November 2019}}
|—
|-
|{{flag|Tanzania}}
|
|{{dts|28 February 1963}}
|—
|Ratified as the [[Republic of Tanganyika]].
|-
|{{flag|Thailand}}
|{{dts|17 June 1925}}
|{{dts|6 June 1931}}
|—{{#tag:ref|Some sources list two reservations by Thailand, but neither the instrument of accession,<ref name=dep/> nor the [[United Nations Office of Disarmament Affairs]] list,<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/thailand/rat/paris|title=Thailand: Ratification of 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref> makes any mention of a reservation.|group=Note}}
|Ratified as [[Siam]].
|-
|{{flag|Togo}}
|
|{{dts|18 November 1970}}
|—
|
|-style="background:#EEEE00;"
|{{flag|Tonga}}
|
|{{dts|19 July 1971}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-style="background:#EEEE00;"
|{{flag|Trinidad and Tobago}}
|
|{{dts|24 November 1970}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref||name=implicit|group=Note}}
|}
|Succeeded from the United Kingdom.
|-
|{{flag|Tunisia}}
|
|{{dts|12 July 1967}}
|—
|
|-
|{{flag|Turkey}}
|{{dts|17 June 1925}}
|{{dts|5 October 1929}}
|—
|
|-
|{{flag|Uganda}}
|
|{{dts|2 April 1965}}
|—
|
|-style="background:#EEEE00;"
|{{flag|Ukraine}}
|
|{{dts|7 August 2003}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Implicit on succession.{{#tag:ref|According to the [[Vienna Convention on Succession of States in respect of Treaties]], states which succeed to a treaty after gaining independence from a state party "shall be considered as maintaining any reservation to that treaty which was applicable at the date of the succession of States in respect of the territory to which the succession of States relates unless, when making the notification of succession, it expresses a contrary intention or formulates a reservation which relates to the same subject matter as that reservation."  Any state which has not clarified their position on reservations inherited on succession are listed as "implicit" reservations.|name=implicit|group=Note}}
|}
|Succeeded from the Union of Soviet Socialist Republics.
|-style="background:#6495ED;"
|{{flag|United Kingdom}}
|{{dts|17 June 1925}}
|{{dts|9 April 1930}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||Reservation 2 withdrawn in 1991 as regards biological agents covered by the [[Biological Weapons Convention|BWC]], and reservations completely withdrawn in 2002.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/unitedkingdomofgreatbritainandnorthernireland/rat/paris|title=United Kingdom of Great Britain and Northern Ireland: Ratification of 1925 Geneva|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:orange;"
|{{flag|United States of America}}
|{{dts|17 June 1925}}
|{{dts|10 April 1975}}
|
{|
|<ref group="Reservation" name="d"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/unitedstatesofamerica/rat/paris|title=United States of America: Ratification of 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-
|{{flag|Uruguay}}
|{{dts|17 June 1925}}
|{{dts|12 April 1977}}
|—
|
|-
|{{flag|Uzbekistan}}
|
|{{dts|5 October 2020}}
|—
|
|-
|{{flag|Venezuela}}
|{{dts|17 June 1925}}
|{{dts|8 February 1928}}
|—
|
|-style="background:orange;"
|{{flag|Vietnam}}
|
|{{dts|15 December 1980}}
|
{|
|<ref group="Reservation" name="a"/><br/><ref group="Reservation" name="b"/>||<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/vietnam/acc/paris|title=Viet Nam: Accession to 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
|
|-style="background:orange;"
|{{flag|Yemen}}
|
|{{dts|11 March 1971}}
|
{|
|<ref group="Reservation" name="c"/>||Made in a second instrument of accession submitted on 16 September 1973.{{#tag:ref|According to the [[Vienna Convention on the Law of Treaties]], states may make a reservation when "signing, ratifying, accepting, approving or acceding to a treaty".|group=Note}}
|}
|Ratified as the [[Yemen Arab Republic]]. Also ratified by the [[People's Democratic Republic of Yemen]] on 20 October 1986, prior to [[Yemeni unification]] in 1990.<ref>{{cite web|url=http://disarmament.un.org/treaties/a/1925/yemen/acc/paris|title=Yemen: Accession to 1925 Geneva Protocol|access-date=31 July 2013|publisher=[[United Nations Office of Disarmament Affairs]]}}</ref>
|}
{{legend|#6495ED|Parties with withdrawn reservations}}
{{legend|#EEEE00|Parties with implicit reservations}} 
{{legend|orange|Parties with unwithdrawn reservations limiting the applicability of provisions of the Protocol}}

;Reservations
{{reflist|group=Reservation}}

;Notes
{{reflist|group=Note}}
<!--Summary of crosscheck with the documents available from the depositary
Nothing available: Antigua and Barbuda, Barbados, Costa Rica, Czech Republic, El Salvador, Libya, Malawi, Malaysia, Malta, Mexico, Moldova, Saint Lucia, Saint Vincent and the Grenadines, Serbia (from FRY), Slovakia, Tonga, Ukraine
Only withdrawal available: Australia, New Zealand, South Africa
No withdrawal available: Belgium, Canada (1999), France, Romania, Russia, Spain, United Kingdom (2002)
Nothing on the original reservation: Estonia (not in original), Portugal (only in notification), Spain (only in notification), Soviet Union (only in notification)
Cambodia: 1993 acceptance not available
Bosnia asked if they automatically succeeded ($41)
Burundi claimed to have succeeded (#51)
-->

==Non-signatory states==
The remaining [[UN member states]] and [[United Nations General Assembly observers|UN observers]] that have not acceded or succeeded to the Protocol are:

{{div col|colwidth=20em}}
* {{flag|Andorra}}
* {{flag|Azerbaijan}}
* {{flag|Bahamas}}
* {{flag|Belarus}}
* {{flag|Belize}}
* {{flag|Bosnia}}
* {{flag|Botswana}}
* {{flag|Brunei}}
* {{flag|Burundi}}
* {{flag|Chad}}
* {{flag|Comoros}}
* {{flag|Democratic Republic of the Congo}}
* {{flag|Republic of the Congo}}
* {{flag|Djibouti}}
* {{flag|Dominica}}
* {{flag|Eritrea}}
* {{flag|Gabon}}
* {{flag|Georgia}}
* {{flag|Guinea}}
* {{flag|Guyana}}
* {{flag|Haiti}}
* {{flag|Honduras}}
* {{flag|Kiribati}}
* {{flag|Mali}}
* {{flag|Marshall Islands}}
* {{flag|Mauritania}}
* {{flag|Federated States of Micronesia|name=Micronesia}}
* {{flag|Montenegro}}
* {{flag|Mozambique}}
* {{flag|Myanmar}}
* {{flag|Namibia}}
* {{flag|Nauru}}
* {{flag|Oman}}
* {{flag|Palau}}
* {{flag|Samoa}}
* {{flag|San Marino}}
* {{flag|São Tomé and Príncipe}}
* {{flag|Seychelles}}
* {{flag|Singapore}}
* {{flag|Somalia}}
* {{flag|South Sudan}}
* {{flag|Suriname}}
* {{flag|Timor-Leste}}
* {{flag|Turkmenistan}}
* {{flag|Tuvalu}}
* {{flag|United Arab Emirates}}
* {{flag|Uzbekistan}}
* {{flag|Vanuatu}}
* {{flag|Zambia}}
* {{flag|Zimbabwe}}
{{div col end}}

==Chemical weapons prohibitions==
{| class="wikitable"
!Year
!Name
!Effect
|-
|1675
|[[Strasbourg Agreement (1675)|Strasbourg Agreement]]
|The first international agreement limiting the use of chemical weapons, in this case, poison bullets.
|-
|1874
|[[Brussels Convention on the Law and Customs of War]]
|Prohibited the employment of poison or poisoned weapons (Never entered into force.)
|-
|1899
|[[Hague Conventions of 1899 and 1907|1st Peace Conference at the Hague]]
|Signatories agreed to abstain from "the use of projectiles the object of which is the diffusion of asphyxiating or deleterious gases."
|-
|1907
|[[Hague Conventions of 1899 and 1907|2nd Peace Conference at the Hague]]
|The Conference added the use of poison or poisoned weapons.
|-
|1919
|[[Treaty of Versailles]]
|Prohibited poison gas in Germany.
|-
|1922
|[[Treaty relating to the Use of Submarines and Noxious Gases in Warfare]]
|Failed because France objected to clauses relating to submarine warfare.
|-
|1925
|Geneva Protocol
|Prohibited the "use in war of asphyxiating, poisonous or other gases, and of all analogous liquids, materials or devices" and "bacteriological methods" in international conflicts.
|-
|1972
|[[Biological and Toxins Weapons Convention]]
|No verification mechanism, negotiations for a protocol to make up this lack halted by USA in 2001.
|-
|1993
|[[Chemical Weapons Convention]]
|Comprehensive bans on development, production, stockpiling and use of chemical weapons, with destruction timelines.
|-
|1998
|[[Rome Statute of the International Criminal Court]]
|Makes it a war crime to employ chemical weapons in international conflicts. ([[Amendments to the Rome Statute of the International Criminal Court|2010 amendment]] extends prohibition to internal conflicts.)
|-
|}

==References==
{{Reflist}}

==Further reading==
*{{cite book |url=https://books.google.com/books?id=dJEpNNKMEXgC |title=Chemical warfare: a study in restraints |author=Frederic Joseph Brown |publisher=Transaction Publishers |year=2005 |isbn=1-4128-0495-7 |pages=98–110 |chapter=Chapter 3: The Evolution of Policy 1922-1939 / Geneva Gas Protocol}}
* Bunn, George. "Gas and germ warfare: international legal history and present status." ''Proceedings of the National Academy of Sciences of the United States of America'' 65.1 (1970): 253+. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC286219/pdf/pnas00092-0274.pdf online]
* Webster, Andrew. "Making Disarmament Work: The implementation of the international disarmament provisions in the League of Nations Covenant, 1919–1925." ''Diplomacy and Statecraft'' 16.3 (2005): 551–569.

==External links==
{{wikisource|Geneva Protocol to Hague Convention}}
* [http://www.brad.ac.uk/acad/sbtwc/keytext/genprot.htm The text of the protocol] {{Webarchive|url=https://web.archive.org/web/20130907031103/http://www.brad.ac.uk/acad/sbtwc/keytext/genprot.htm |date=7 September 2013 }}
* [http://www.firstworldwar.com/weaponry/gas.htm Weapons of War: Poison Gas]

[[Category:Biological warfare]]
[[Category:Chemical warfare]]
[[Category:Chemical weapons demilitarization]]
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[[Category:Treaties of the Dominion of Ceylon]]
[[Category:Treaties of the Democratic Republic of the Sudan]]
[[Category:Treaties of Eswatini]]
[[Category:Treaties of Sweden]]
[[Category:Treaties of Switzerland]]
[[Category:Treaties of Syria]]
[[Category:Treaties of Tanzania]]
[[Category:Treaties of Thailand]]
[[Category:Treaties of Togo]]
[[Category:Treaties of Tonga]]
[[Category:Treaties of Trinidad and Tobago]]
[[Category:Treaties of Tunisia]]
[[Category:Treaties of Turkey]]
[[Category:Treaties of Uganda]]
[[Category:Treaties of Ukraine]]
[[Category:Treaties of the United Kingdom]]
[[Category:Treaties of the United States]]
[[Category:Treaties of Uruguay]]
[[Category:Treaties of Venezuela]]
[[Category:Treaties of Vietnam]]
[[Category:Treaties of the Yemen Arab Republic]]
[[Category:Treaties of South Yemen]]
[[Category:Treaties extended to Curaçao and Dependencies]]
[[Category:Treaties extended to Greenland]]
[[Category:Treaties extended to the Faroe Islands]]
[[Category:Treaties extended to the Dutch East Indies]]
[[Category:Treaties extended to Surinam (Dutch colony)]]
[[Category:Treaties concluded in Geneva]]