The Cuban Missile Crisis happened one year ... and to transform the history of man. Narrator: It was the start of a crisis that took the world to the brink of a nuclear holocaust.

This clip is from the series Hunting for History. A typical question which historians debate is how serious the Cuban Missile Crisis was and whether nuclear war was a realistic possibility.

The negotiation would come to be known as the Cuban Missile Crisis and would be one of Kennedy's most lasting legacies. Narrator: The Soviets seemed intent on testing the quarantine line that ...