This month marks the 50th anniversary of the Cuban Missile Crisis - a confrontation between the United States and the Soviet Union that brought the world to the brink of nuclear war.
The Cuban Missile Crisis

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This file photo shows pictures released by the U.S.Defense Department of Mariel naval port in Cuba on November 4, 1962. The department identified the ships at dockside as Soviet freighters. Photo at upper left is a blowup of missile equipment in outline

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Then-Major Richard ``Steve'' Heyser, left, and General Curtis LeMay, then Air Force chief of staff, center, meet with President John F. Kennedy in the White House in Washington in this 1962 picture, to discuss U-2 spy plane flights over Cuba.

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Radar towers fill the area near the Dan Beard Research Center near the Nike missile site inside the Everglades National Park, Florida, as seen in a photo from 1968.