9M729 (SSC-8)

Last Updated 
PrintEmailFacebookTwitterLinkedInCopy Link

The SSC-8 is a Russian ground-launched cruise missile (GLCM) with a range of 2,500 km. Its development prompted the 2019 U.S. withdrawal from the 1987 INF Treaty.

9M729 (SSC-8) at a Glance

Originated from
Possessed by
Alternate names
9M729, SSC-X-8 (experimental designation)
Ground-launched Cruise Missile (GLCM)
6 – 8 m
0.514 m
Single warhead, 450 kg
2,500 km
In service

SSC-8 Development

Russia reportedly began covert development of the SSC-8 in the mid-2000s, and started flight testing in 2008.1 It was first test fired in July 2014.2 It was again reportedly test fired on September 2, 2015, although U.S. officials said it did not fly beyond the 500 km INF range limit.3

A November 2018 DNI statement clarifies Russia’s testing regime: “Russia initially flight tested the 9M729 – a ground based missile – to distances well over 500 kilometers (km) from a fixed launcher. Russia then tested the same missile at ranges below 500km from a mobile launcher. By putting the two types of tests together, Russia was able to develop a missile that flies to the intermediate ranges prohibited by the INF Treaty and launches from a ground-mobile platform.”4

The missile is likely a ground-launched variant of the Russian Navy’s 3M-54 Kalibr missile (NATO: SS-N-27 Sizzler). It has also been reported as a modified version of the Iskander-K or Kh-101. It was originally designated in U.S. reports as the SSC-X-8, but officials removed the “X” when it transitioned from an experimental to operational weapon.5 The missile was developed by Russian company NPO Novator.

SSC-8 Specifications

The SSC-8 is a ground-launched cruise missile approximately 6-8 m in length and 0.514 m in diameter. It has reportedly been tested at various ranges, but the 2017 U.S. Air Force National Air and Space Intelligence Center (NASIC) published a maximum range of 2,500 km.6

The missile employs a guidance system developed by Russian defense manufacturer GosNIPP.7 Its mobile launcher is reportedly distinct from but “closely resembles” the INF-compliant Iskander-M TEL (9P78-1), which, if true, would complicate future arms control verification.8Some analysts suspect the SSC-8 uses the 9P701 TEL.9

SSC-8 Service History

In February 2017, U.S. officials reported that Russia had deployed two SSC-8 missile battalions. One was deployed at Russia’s Kapustin Yar missile test range, located in southwest Russia. The second was moved in December 2016 from Kapustin Yar to an unknown operational base. Each battalion includes four launchers, and each launcher is supplied with an estimated six missiles. As of December 2018, Russia has produced fewer than 100 SSC-8 missiles.10

INF Compliance

In January 2014, the United States informed its NATO allies of a Russian missile that violated the range and launcher regulations of the Intermediate Nuclear Forces (INF) Treaty. In a July 2014 official compliance report, the United States found the “Russian Federation in violation of its obligations under the INF treaty not to possess, produce, or flight-test a GLCM with a range capability of 500 to 5,500 km, or to possess or produce launchers of such missiles.”11 While the missile was not named at the time, analysts today acknowledge the SSC-8 is the non-compliant missile referred to in the report.

In November 2016, the United States called for a special verification commission to deal with Russia’s alleged INF violation. Parties involved in this discussion included the United States, Russia, Belarus, Kazakhstan, and Ukraine. Russia maintained the SSC-8 did not violate INF principles, and the commission did not advance.

As first reported in November 2017, the United States has responded to Russia’s SSC-8 development with R&D on its own ground-launched, intermediate-range missile. While this R&D is permitted under INF guidelines, its flight testing and/or deployment would not.12 This decision was later confirmed in the 2018 U.S. Nuclear Posture Review: “The United States is commencing INF Treaty-compliant research and development by reviewing military concepts and options for conventional, ground-launched, intermediate-range missile systems.”13

On October 19, 2018, President Trump announced that the United States plans to withdraw from the INF Treaty due to Russian violations. “We’re the ones that have stayed in the agreement, and we’ve honored the agreement. But Russia has not, unfortunately, honored the agreement. So we’re going to terminate the agreement and we’re going to pull out.”14

On January 23, 2019, Russia publicly displayed the SSC-8 missile for the first time. Lt. Gen Mikhail Matveevsky, chief of the military’s missile and artillery forces, argued that 9M729 missile features a more powerful warhead and improved guidance system over the previous 9M728 model. It does not, however, have an increased range. Matveevsky also claimed the presentation highlighted Russia’s “increased transparency and our adherence to the INF Treaty.”15


    1. Office of the Director of National Intelligence, “Director of National Intelligence Daniel Coats on Russia’s Intermediate-Range Nuclear Forces (INF) Treaty Violation,” November 30, 2018, https://www.dni.gov/index.php/newsroom/speeches-interviews/item/1923-director-of-national-intelligence-daniel-coats-on-russia-s-inf-treaty-violation; Pavel Podvig, “Is it too late to have an informed discussion about the INF treaty?” Russian Strategic Forces (blog), December 2, 2015, http://russianforces.org/blog/2017/07/is_it_too_late_to_have_an_info.shtml.
    2. BBC, “Russia ‘violated 1987 nuclear missile treaty’, says US,” July 29, 2014, https://www.bbc.com/news/world-us-canada-28538387.
    3. Bill Gertz, “Russia Again Flight Tests Illegal INF Cruise Missile,” The Washington Free Beacon, September 28, 2015, https://freebeacon.com/national-security/russia-again-flight-tests-illegal-inf-cruise-missile/.
    4. Office of the Director of National Intelligence, “Director of National Intelligence Daniel Coats on Russia’s Intermediate-Range Nuclear Forces (INF) Treaty Violation”.
    5. Michael R. Gordon, “Russia Deploys Missile, Violating Treaty and Challenging Trump,” New York Times, February 14, 2017, https://www.nytimes.com/2017/02/14/world/europe/russia-cruise-missile-arms-control-treaty.html?_r=0.
    6. U.S. Air Force National Air and Space Intelligence Center (NASIC), “U.S. Ballistic and Cruise Missile Threat,” June 26, 2017, 37, https://fas.org/wp-content/uploads/media/NASIC2017.pdf. Note: This was before a “corrected” NASIC report removed the ground version. See https://fas.org/blogs/security/2017/08/nasic-2017-corrected/.
    7. Jeffrey Lewis, “Russian Cruise Missiles Revisited,” Arms Control Wonk (Blog), October 27, 2015, https://www.armscontrolwonk.com/archive/207816/russian-cruise-missiles-revisited/. Note: The original GosNIPP announcement has been removed from its website.
    8. Gordon, NYT.
    9. Semen Kabakev, “Russia Deploys Banned Missile and Brags about It,” Atlantic Council, May 10, 2017, http://www.atlanticcouncil.org/blogs/ukrainealert/russia-deploys-banned-missile-and-brags-about-it; Podvig, “Is it too late to have an informed discussion about the INF treaty?”
    10. Michael R. Gordon, “As One Arms Treaty Falls Apart, Others Look Shakier,” Wall Street Journal, December 7, 2018, https://www.wsj.com/articles/looming-demise-of-a-nuclear-treaty-threatens-to-upend-others-1544187603.
    11. U.S. State Department, Adherence to and Compliance with Arms Control, Nonproliferation, and Disarmament Agreements and Commitments Report, July 2014, https://www.state.gov/documents/organization/230108.pdf.
    12. Julian E. Barnes, Paul Sonne and Brett Forrest, “Pentagon Moves to Develop Banned Intermediate Missile,” Wall Street Journal, November 15, 2017, https://www.wsj.com/articles/pentagon-moves-to-develop-banned-intermediate-missile-1510862789.
    13. U.S. Department of Defense, “U.S. Nuclear Posture Review,” (Washington, DC: DoD, 2018), 10, https://media.defense.gov/2018/Feb/02/2001872886/-1/-1/1/2018-NUCLEAR-POSTURE-REVIEW-FINAL-REPORT.PDF.
    14. Ann M. Simmons, Thomas Grove, and Courtney McBride, “Russian Officials Slam Trump’s Plans to Exit Nuclear Treaty,” Wall Street Journal, October 21, 2018, https://www.wsj.com/articles/russian-officials-slam-trumps-plans-to-exit-inf-nuclear-treaty-1540118231.
    15. Vladimir Isachenkov, “Russia presents info on missile US says violates pact,” <em>Associated Press</em>, January 23, 2019, https://apnews.com/d2d41dccab534618a982966c1001110b.
PrintEmailFacebookTwitterLinkedInCopy Link

Cite this Page

Missile Defense Project, "9M729 (SSC-8)," Missile Threat, Center for Strategic and International Studies, October 23, 2018, last modified April 23, 2024, https://missilethreat.csis.org/missile/ssc-8-novator-9m729/.