RT-2PM Topol - Operational History

Operational History

At the time of the signing of the 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 INF Treaty was signed in 1987 several SS-20 deployment sites were adapted to launch the Topol missiles. The United States expressed specific concerns during the INF treaty negotiations. When the SS-25 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 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 intruded Soviet airspace over Kamchatka.

An RT-2PM Topol with two 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 Treaty, which never had and most likely will never have a binding effect, Russia would have been able to place 90 single-warhead solid fuel missiles in reequipped R-36 silos. In order to guard against a break-out scenario involving the rapid reconversion of R-36 silos on-site inspection became a very important aspect of START II verification.