The Cuban Missile Crisis was a tense standoff between the United States and the Soviet Union in October 1962. Key events included the discovery of Soviet missile installations in Cuba, a naval blockade of Cuba by the US, the threat of a US invasion of Cuba, and a negotiated settlement in which the Soviet Union agreed to remove the missiles in exchange for a US pledge not to invade Cuba and the removal of US missiles from Turkey. The crisis is widely regarded as the closest the world ever came to nuclear war.