Russia's new Iskander system can be armed with nuclear warheads and can fire either ballistic (pictured) or cruise missiles. The Iskander-M missile launcher was used during a military exercise last month by the Russian Eastern Military District's 5th army at a firing range in Ussuriysk, Russia. Yuri Smityuk/TASS via Getty Images hide caption

toggle caption
Yuri Smityuk/TASS via Getty Images

An intercontinental ballistic missile in its silo at Malmstrom Air Force Base in Montana. Airman John Parie/U.S. Air Force hide caption

toggle caption
Airman John Parie/U.S. Air Force