CIA reference photograph of a Soviet medium-range ballistic missile in Red Square, Moscow.

The Cuban Missile Crisis was a 13-day confrontation between
the United States and the Soviet Union, when American
deployments of nuclear missiles in Italy and Turkey were
matched by Soviet deployments of nuclear missiles in Cuba.

The crisis lasted from October 16 to October 28, 1962. The
confrontation is widely considered the closest the
the Cold War came to escalating into full-scale nuclear
war.

Cuban Missile Crisis, map of immediate-threat areas.