The document discusses the Cold War tensions between the U.S. and Cuba in the 1960s. It references the Cuban Missile Crisis where the Soviet Union placed nuclear missiles in Cuba, leading the U.S. to impose a naval blockade. Several links are provided about the Cuban Missile Crisis, the Bay of Pigs invasion where the U.S. backed Cuban exiles in an attempt to overthrow Fidel Castro, and the ongoing tensions between the U.S. and Cuba during this time period of the Cold War.