During World War Il, the US begins to work on a top-secret project that results in the atomic bombings on Japan - and a global conflict lasting decades.
The US and Soviet Union get caught in a nuclear arms race. A wall divides Berlin. John F. Kennedy looks for a peaceful solution after a crisis in Cuba.
With both sides planning for the worst-case scenario, Ronald Reagan and Mikhail Gorbachev find common ground. Tragedy strikes after a nuclear disaster.
The USSR's grasp on Eastern Europe weakens as the Berlin Wall comes down and the Communist Party mounts a coup against a prominent Soviet Union leader.
A new Russian leader emerges, and the republics seek independence. As the Soviet Union dissolves, several powers sign a landmark treaty on nuclear arms.
