Cold War:The ongoing state of political and military tension between the United States and the Soviet Union and their respective allies, characterized by a lack of direct military conflict.
Nuclear Deterrence: The strategy of using the threat of retaliation to prevent an attack, based on the idea that the devastating consequences of a nuclear war would outweigh the potential gains.
Blockade: A military or economic measure that seeks to isolate and restrict the movement of an enemy, in this case the U.S. naval blockade of Cuba to prevent the delivery of Soviet missiles.