The United States and the Soviet Union were the two main nations that defeated Nazi Germany in World War II. Yet their systems of government were completely different. These differences soon developed into the Cold War. Both sides became bitter enemies. But there was no actual fighting. That situation nearly changed in 1961. The Soviets secretly installed missiles with nuclear warheads in Cuba. These missiles could reach many cities in the United States. When President John F. Kennedy learned about these weapons, he confronted Soviet premier Nikita Khrushchev. The world teetered on the brink of a nuclear war. This is the story of that chilling event.