View source for RT-2PM Topol

{{Infobox weapon
| is_missile         = yes
| name               = RT-2PM Topol<br />SS-25 Sickle
| image              = Russian Intercontinental Ballistic Missile launched from Plesetsk.jpg
| image_size         = 300
| caption            = Topol test-launched from Plesetsk Cosmodrome
| origin             = [[Soviet Union]]
| type               = [[Intercontinental ballistic missile]]
| used_by            = Russian [[Strategic Rocket Forces]]
| designer           = [[Alexander Nadiradze]]<ref name="astronautix.com">{{cite web|url=http://www.astronautix.com/lvs/topol.htm|title=Topol|access-date=23 December 2014|url-status=dead|archive-url=https://web.archive.org/web/20131030090848/http://www.astronautix.com/lvs/topol.htm|archive-date=30 October 2013}}</ref>([[Moscow Institute of Thermal Technology]]), continued after his death by Boris N. Lapygin.
| manufacturer       = [[Votkinsk Machine Building Plant]]
| unit_cost          = 
| propellant         = 
| production_date    = 1985
| service            = 1985–2023
| engine             = Three-stage [[Solid-fuel rocket]]
| engine_power       = 
| weight             = {{convert|50100|kg|abbr=on}}
| length             = {{convert|23.5|m|abbr=on}}
| height             = 
| diameter           = {{convert|2.17|m|abbr=on}}
| wingspan           = 
| speed              = approx. {{convert|7.4|km/s|km/h mph Mach}}
| vehicle_range      = {{convert|11000|km|abbr=on}}
| ceiling            = 
| altitude           = 
| filling            = 1 x 800 [[Kiloton|kt]] or 1 x 1 [[TNT equivalent|Mt]]
| guidance           = Inertial, autonomous
| accuracy           = 200-900m<ref>{{Cite web|url=https://missilethreat.csis.org/missile/ss-25/#en-347-4|title=RT-2PM Topol (SS-25)}}</ref> m [[Circular error probable|CEP]]
| detonation         = 
| launch_platform    = Road-mobile [[Transporter erector launcher|TEL]]
}}
[[File:Moscow Parad 2008 Ballist.jpg|300px|thumb|[[MAZ-7917]] TEL vehicle]]
The '''RT-2PM Topol'''<ref>{{Cite web|url=https://www.thedrive.com/the-war-zone/17197/russia-fires-topol-ballistic-missile-to-test-new-tech-to-defeat-missile-defense-systems|title = Russia Fires Topol Ballistic Missile to Test New Tech to Defeat Missile Defense Systems|date = 26 December 2017}}</ref> ({{langx|ru|РТ-2ПМ Тополь ("[[Populus|Poplar]]")}}; [[NATO reporting name]] '''SS-25 [[Sickle]]'''; [[GRAU|GRAU designation]]: '''15Ж58''' ("15Zh58"); START I designation: '''RS-12M Topol''')<ref name="Janes">{{citation | url=http://www.janes.com/extracts/extract/jsws/jsws0461.html | archive-url=https://archive.today/20130103162758/http://www.janes.com/extracts/extract/jsws/jsws0461.html | url-status=dead | archive-date=2013-01-03 |title=RS-12M Topol (SS-25 'Sickle'/RT-2PM) | journal=Jane's Strategic Weapon Systems | date=2008-09-10 }}</ref> was a mobile [[intercontinental ballistic missile]] designed in the [[Soviet Union]] and in service with [[Russia]]'s [[Strategic Missile Troops]]. {{asof|2014}}, Russia planned to replace all RT-2PM ICBMs with versions of [[Topol-M]].<ref>{{Cite web|url=https://fas.org/blogs/security/2014/05/russianmodernization/|title=Russian ICBM Force Modernization: Arms Control Please! |website=fas.org|date=2014-05-01}}</ref> In December 2023, the last Topol regiment was taken off combat duty.<ref name=":0" />

== Development ==
The three stage solid propellant RT-2PM Topol is an improved mobile [[ICBM]] which replaced earlier outdated missile complexes. It emerged from the same line of development as mobile missiles such as the [[RT-21 Temp 2S]] and the [[RSD-10 Pioneer]], and was deployed as a replacement for the widely deployed [[UR-100]]. The United States considered developing their own road-mobile ICBM called the [[Midgetman missile|Midgetman]], but the program was canceled with the end of the Cold War.

Development of the RT-2PM was approved on 19 July 1977 and carried out by the [[Moscow Institute of Thermal Technology]] headed by [[Alexander Nadiradze]]. Flight tests were conducted on the [[Plesetsk Cosmodrome|Plesetsk test site]] from February through December 1985. The main problem that had to be overcome during this period was the development of battle management system. After the first test series was successfully conducted in April 1985, with the first regiment with Topol missiles put on alert in July 1985. Throughout this time work continued on improving the battle management system. The test missile firings were finally completed in December 1987. The first regiment of "Topol" missiles employing a modernized mobile command center (in the area of [[Irkutsk]]) were put on alert on 27 May 1988. After Nadiradze's death in 1988 Boris N. Lapygin continued his work on the Topol missile.<ref name="astronautix.com"/>

== Design ==
The RT-2PM ICBM was designed to be road mobile and is mounted on a heavy truck ([[MAZ-7310]] or [[MAZ-7917]]).

The RT-2PM is a road mobile 3-stage, single warhead ICBM. Its 23,500 mm length and 2,170 mm diameter are approximately the same size and shape as the U.S. [[LGM-30 Minuteman|Minuteman]] ICBM. It has a throw-weight of 1,400&nbsp;kg and carries a single warhead with a yield of 800-1,000 kt<ref name="icbmhistory">[https://www.tandfonline.com/doi/pdf/10.2968/065001008 Nuclear Notebook: U.S. and Soviet/Russian intercontinental ballistic missiles, 1959–2008]</ref> and accuracy ([[Circular error probable|CEP]]) of 900m.<ref name="missilethreat">[https://missilethreat.csis.org/missile/ss-25/#en-347-4 RT-2PM Topol (SS-25)]</ref> It can fire from field deployment sites or through sliding roof garage bases. The RT-2PM Topol joined operational Soviet SRF regiments in 1985. A total area of approximately 190,000 square kilometers could be required to deploy a force consisting of 500 road-mobile Topol ICBMs. Mobile units require a much higher number of personnel for maintenance and operation than fixed systems. Consequently, the RT-2PM Topol was significantly more costly to maintain and operate than silo launched systems.

All three stages are made of composite materials. During first stage operation the flight control is implemented through four aerodynamic and four jet vanes. Four similar trellised aerodynamic surfaces serve for stabilization. During the second and third stage of flight gas is injected into the diverging part of the nozzle for flight control.

[[File:Topol LAS.JPG|thumb|right|Launch-Assisting Support vehicle of Topol at the [[Saint-Petersburg Artillery Museum]]]]
[[File:Topol TRS.JPG|thumb|right|Troposphere Relay Station vehicle of Topol at the [[Saint-Petersburg Artillery Museum]]]]
The missile is deployed in a [[Transporter erector launcher|Transporter Erector Launcher (TEL)]] canister mounted on cross-country 7-axle chassis on a mobile launch vehicle. The chassis incorporates jacks, gas and hydraulic drives and cylinders, with a power of several hundred tons, for jacking and leveling of the launcher, speeding up (combat) and slowing down (maintaining) elevation of the container with the missile in the vertical position. The TEL is accompanied by a Mobile command post, carrying support facilities mounted on cross-country 4-axle chassis with unified vans. The complex is equipped with an onboard inertial navigation system which gives the TEL group the capability to conduct the launch independently from its field deployment sites. This topo-geodesic support and navigation subsystem, created by the "Signal" Research Institute, provides a quick and highly precise tie-in of the launcher in a field position and enables its crew to carry out missile launches from any combat patrol route point. The launch can also be carried out at regimental bases from the aforementioned garrison garage.

==Operational history==
[[File:RT-2PM.PNG|thumb|right|60px|RT-2PM missile scheme]]
At the time of the signing of the [[START I|START I Treaty]] in 1991 the Soviet Union had deployed some 288 Topol missiles. Deployment continued, and at the end of 1996 a total of 360 Topol missiles were deployed.

The Topol missile was deployed at previously developed deployment sites. After the [[Intermediate-Range Nuclear Forces Treaty|INF Treaty]] was signed in 1987 several [[RSD-10 Pioneer]] deployment sites were adapted to launch the Topol missiles. The United States expressed specific concerns during the INF treaty negotiations. When the RT-2PM missile system was deployed in the field, with its missile inside the canister and mounted on the launcher, the US contended that the canister might conceal an [[RSD-10]] Pioneer missile. This was of concern because unlike the single warhead of the RT-2PM Topol, the [[RSD-10]] carried up to 3 warheads. A resolution was reached after the Soviet Union agreed to allow inspection parties to use radiation detection systems to measure fast neutron intensity flux emanating from the launch canister. A launch canister with a missile inside containing a single warhead, such as the RT-2PM Topol, emitted a different pattern of fast neutrons than did one with a missile having three warheads, such as the [[RSD-10]].

Provisions of the [[Strategic Arms Limitation Talks|SALT II]] agreement prohibited the deployment of more than one new missile (which became RT-23UTTh), it was officially declared by the Soviet Union that the RT-2PM Topol was developed to upgrade the silo based [[RT-2]]. The US government disputed this view, contending that the missile was clearly more than 5% larger and had twice the throw-weight as the [[RT-2]] and therefore constituted a new missile system. Marshal [[Nikolai Ogarkov]], Soviet Chief of General Staff cancelled the September 1, 1983 test flight of the RT-2PM Topol which was to be launched from Plesetsk (the launch site in northwest Russia used for test firing of solid fuel propellant ICBMs)- 24 minutes later to land in the Klyuchi target area on the Kamchatka Peninsula. The night of the scheduled launch was the night that [[Korean Air Lines Flight 007]] was shot down after accidentally intruding Soviet airspace over Kamchatka.

An RT-2PM Topol with two [[Multiple independently targetable reentry vehicle|MIRVs]] may have been tested in 1991, and the missile was tested at least once with four MIRV warheads, but there has apparently been no further development of a multiple warhead version. This became a point of contention during the conclusion of the 1991 START negotiations, at which time the US pressed for a definition of "downloading" (removing warheads from missiles) that would complicate any Soviet attempt suddenly to deploy multiple warheads on the RT-2PM Topol.

Russia plans to reequip approximately 400 silos where obsolete [[UR-100]], [[RT-2]] and [[MR-UR-100]] missiles are located. Under the [[START II|START II Treaty]], which is a non-binding agreement, Russia would be able to place 90 single-warhead solid fuel missiles in reequipped [[R-36 (missile)|R-36]] silos. In order to guard against a break-out scenario involving the rapid reconversion of [[R-36 (missile)|R-36]] silos on-site inspection became a very important aspect of START II verification.

===Post-Soviet period===
{{Unreferenced section|date=May 2009}}
The breakup of the Soviet Union had a significant impact on the Topol program. The dispersed manufacturing of ICBM components seriously complicated researching and building new missile systems. For example, the [[Minsk Automobile Plant|Minsk Wheeled Truck-Tractor Manufacturing Plant]] in [[Belarus]] manufactured the missiles' transporter launchers, and some 90% of the components of the guidance system were manufactured in [[Ukraine]].

In [[Belarus]], as of December 1995, 63 RT-2PM Topol ICBMs originally deployed there had been returned to Russia. As of December 1995, Belarus had two operational mobile RT-2PM Topol regiments remaining on its territory, with a total of 18 nuclear warheads. In July 1992, Belarus signed an agreement with Russia placing the regiments under exclusive Russian control. In September 1993, Moscow and Minsk signed an agreement requiring the return of these nuclear missiles and all related missile support equipment to Russia by the end of 1996. A total of 81 RT-2PM Topol ICBMs and associated warheads were returned to Russia from Belarus.

By the late 1990s the lack of resources and qualified personnel forced the [[Strategic Rocket Forces]] to cut back operations considerably, with no more than one or two regiments of the mobile RT-2PM Topol missiles dispersed in the field. The remaining 40 or so regiments, each with nine single-warhead missiles, remain in garrison.

[[File:Topol TEL.JPG|thumb|right|Topol TEL in [[Military Historical Museum of Artillery, Engineers and Signal Corps]]]]

===Recent history===
On 18 October 2007, another successful test launch was conducted. One Topol from a mobile launcher at [[Plesetsk test site]] reached its target on Kamchatka. As the Strategic Rocket Forces representative reported, it allowed for the extension of Topol's service life to 21 years.<ref>{{cite journal|url=https://russianforces.org/blog/2007/10/launch_of_topol_extends_its_se.shtml|title=Launch of Topol extends its service life|journal=Russian Strategic Nuclear Forces|date=18 October 2007|access-date=23 December 2014|last1=Podvig|first1=Pavel}}</ref>

Another test of the RT-2PM Topol was carried out on Thursday, August 28, 2008. The launch was said to be specially tasked to test the missile's capability to avoid ground-based detection systems.<ref>[https://www.washingtonpost.com/wp-dyn/content/article/2008/08/28/AR2008082800948.html Russia long-range missile test a success]{{dead link|date=June 2021|bot=medic|fix-attempted=yes}}<!---- Not on the WebArchive--->{{cbignore|bot=medic}}</ref>

Another test was conducted on 12 October 2008 when a Topol was launched from the [[Plesetsk test site]] in northern Russia. The missile, with a dummy warhead, hit a target at the [[Kura Test Range]] on the [[Kamchatka Peninsula]].{{cn|date=March 2023}}

Tests conducted on 28 October 2011 and 3 November 2011, confirmed service life extension to 23 years (to 2019).<ref>{{cite journal|url=https://russianforces.org/blog/2011/10/topol_might_stay_in_service_un.shtml|title=Topol might stay in service until 2019|journal=Russian Strategic Nuclear Forces|date=28 October 2011|access-date=23 December 2014|last1=Podvig|first1=Pavel}}</ref><ref>{{cite journal|url=https://russianforces.org/blog/2011/11/launch_of_topol_to_confirm_mis.shtml|title=Launch of Topol to confirm missile life extension|journal=Russian Strategic Nuclear Forces|date=3 November 2011|access-date=23 December 2014|last1=Podvig|first1=Pavel}}</ref> More tests for extension to 25 years were announced, and on October 30, 2012, an RS-12M Topol Intercontinental Ballistic Missile was launched from the Plesetsk site in northern Russia  <ref>{{cite news| url=https://www.huffingtonpost.com/2012/10/20/vladimir-putin-russia-nuclear-arsenal_n_1992813.html | work=Huffington Post | first=Chris | last=Gentilviso | title=Putin Leads Russia's Biggest Nuclear Tests In Decades | date=20 October 2012}}</ref>

On 4 March 2014, Russia test fired an RS-12M Topol Intercontinental Ballistic Missile from [[Kapustin Yar]] testing ground near the Caspian Sea, successfully hitting its target at a test ground in [[Kazakhstan]]. Although the United States had received advanced notice about the test it had coincided with the [[annexation of Crimea by the Russian Federation|annexation of Crimea]].<ref>[https://www.foxnews.com/world/russia-test-fires-intercontinental-ballistic-missile Russia test-fires Intercontinental Ballistic Missile, report says]. Fox News, 4 March 2014</ref>

On 20 March 2014, Russia test fired an RS-12M Topol Intercontinental Ballistic Missile from [[Kapustin Yar]] testing ground.{{cn|date=May 2022}}

11 September 2016 - The Russian Strategic Missile Forces have conducted a successful test launch of a RS-12M Topol intercontinental ballistic missile, the Defense Ministry said Friday.
According to the ministry, the missile, launched from the Plesetsk space center in northwestern Russia has hit a designated target on the Kamchatka peninsula "with high precision." The RS-12M Topol is a single-warhead intercontinental ballistic missile, which entered service in 1985. It has a maximum range of 10,000&nbsp;km (6,125 miles) and can carry a nuclear warhead with a yield of up to 550 kilotons.<ref>{{cite web |url=http://www.interfax.com/news.asp?y=2014&m=5&d=20 |title=Interfax News, 20 May 2014 |archive-url=https://web.archive.org/web/20140521033147/http://www.interfax.com/news.asp?y=2014&m=5&d=20 |archive-date=21 May 2014 |url-status=dead}}</ref>{{verification failed|date=September 2022}}

On 28 November 2019 Russian [[Strategic Missile Troops]] performed a missile test with a suborbital launch of a RS-12M Topol missile from [[Kapustin Yar]]. The test was successful.{{cn|date=May 2022}}

The Topol will eventually be replaced by the road-mobile version of the [[Topol-M]] missile.{{cn|date=May 2022}}

On 16 December 2023, the commander of the Strategic Missile Troops, Colonel General Sergei Karakaev, announced that with the rearmament of the last missile regiment of the Bologovsky missile formation in the Tver region from the Topol to the RS-24 Yars, the re-equipment of the mobile group of the Strategic Missile Forces was completed.<ref name=":0">{{Cite web |last=Новости |first=Р. И. А. |date=16 December 2023 |title=Мобильную группировку РВСН полностью перевооружили на комплекс "Ярс" |url=https://ria.ru/20231216/yars-1916135400.html |access-date=2024-01-09 |website=РИА Новости |language=ru}}</ref>

[[US Air Force]] [[National Air and Space Intelligence Center]] estimating that as of June 2017 about 100 launchers were operationally deployed.<ref>{{cite web |title=Ballistic and Cruise Missile Threat |url=https://www.nasic.af.mil/LinkClick.aspx?fileticket=F2VLcKSmCTE%3d&portalid=19 |year=2017 |publisher=Defense Intelligence Ballistic Missile Analysis Committee}}</ref>

== Variants ==
* '''[[Start-1]]''' – a commercial space launch vehicle derived from the missile.

==Operators==
[[File:Пуск ракеты комплекса Тополь.jpg|thumb|Topol missile launch]]
;{{RUS}}
The [[Strategic Missile Troops]] were the only operator of the RT-2PM Topol. As of March 2020,<ref>{{cite journal|title=Russian nuclear forces, 2020 |journal=Bulletin of the Atomic Scientists |volume=76 |issue=2 |pages=73–84 |last1=Kristensen |first1=Hans M. |last2=Korda |first2=Matt |date=9 March 2020 |doi=10.1080/00963402.2020.1728985 |bibcode=2020BuAtS..76b.102K |doi-access=free }}</ref> 36 road-mobile RT-2PM Topol missiles were deployed with:
* [[35th Rocket Division]] at [[Barnaul]]
* [[7th Guards Rocket Division]] at [[Vypolzovo]]

===Former operators===
; {{USSR}}
* [[33rd Guards Rocket Army#Composition|39th Guards Rocket Division]] ([[Pashino]], [[Novosibirsk Oblast]])

==See also==
* [[Strategic Missile Troops]]
* [[RT-2PM2 Topol-M]]
* [[RS-24 Yars]]
* [[RS-26 Rubezh]]
* [[RS-28 Sarmat]]
* [[R-36 (missile)]]
* [[UR-100N]]
* [[LGM-30 Minuteman]]
* [[Agni-V]]
* [[DF-5]]
* [[DF-41]]
* [[Hwasong-18]]

==References==
{{More footnotes needed|date=August 2008}}
{{reflist}}
* Podvig, Pavel. (2001) Russian Strategic Nuclear Force. Cambridge, MA: The MIT Press.

==External links==
{{Commons category|RT-2PM Topol}}
* [https://missilethreat.csis.org/missile/ss-25-topol/ CSIS Missile Threat - SS-25 "Topol"]
* [http://kapyar.km.ru/ kapyar] {{Webarchive|url=https://web.archive.org/web/20120512020438/http://kapyar.km.ru/ |date=2012-05-12 }} (in Russian)
* [http://thebulletin.metapress.com/content/t308307173860748/?p=2114f00338444b71903d97f57d88c181&pi=2 Russian Nuclear Forces, 2005], [https://thebulletin.org The Bulletin of the Atomic Scientists], March/April 2005, pp.&nbsp;2

{{Russian and Soviet military designation sequences}}
{{Russian and Soviet missiles|SSM}}
{{USAF/DoD reporting names}}

{{DEFAULTSORT:Rt-2pm Topol}}
[[Category:Cold War intercontinental ballistic missiles of the Soviet Union]]
[[Category:Weapons and ammunition introduced in 1985]]
[[Category:Intercontinental ballistic missiles of the Soviet Union|RT-002PM]]
[[Category:Votkinsk Machine Building Plant products]]