Castro was a communist and he made Cuba the first socialist country of the Americas. During the Cold War he was a friend of the Soviet Union, and he depended on their help until the USSR collapsed. An important moment of the Cold War was the Cuban Missile Crisis of 1962. In October 1962 the United States of America discovered that the Soviet Union was placing missiles on Cuba, close to the United States. After very tense talking, a big nuclear war was avoided between the Soviet Union and the USA.