In 2000, one of the worst peacetime submarines accidents ever took place off the coast of Russia. A huge explosion sank the giant nuclear-powered submarine Kursk, killing most of its crew and stranding nearly two dozen survivors hundreds of feet underwater. An international rescue team assembled to save the sailors, but was unable to reach them in time.
Colin Firth stars in a new movie about the disaster called Kursk, which comes out this year. Here's the true story of the doomed sub.
One of the Soviet Union's biggest worries during the Cold War was America's fleet of aircraft carriers. The Soviets saw American carriers as both delivery platforms capable of launching thermonuclear airstrikes against the motherland and as hunters of the USSR's own nuclear ballistic missile fleet. The USSR spent enormous sums on weapon systems meant to hunt down American carriers in wartime.