RT-21 Temp 2S

The RT-21 Temp 2S was a mobile intercontinental ballistic missile developed by the Soviet Union during the Cold War. It was assigned the NATO reporting name SS-16 Sinner and carried the industry designation 15Zh42.

The RT-21 was the first mobile ICBM developed by the Soviet Union. It relied heavily on the RT-21M Pioner (SS-20 Saber), a shorter-range missile, for its technology. The program became mired in a series of treaty complications, including questions regarding its use of theatre missile launchers. Ultimately, it is unlikely that the RT-21 reached deployment, and by the mid-1980s, the program had been scrapped. Period of storage on launcher 5 years, preparation time for launch 40 minutes