During the Cold War, the United States was a power in the Western Bloc.
 Major crises of this phase included the 19481949 Berlin Blockade, the 19451949 Chinese Communist Revolution, the 19501953 Korean War, the 1956 Hungarian Revolution, the 1956 Suez Crisis, the 1961 Berlin Crisis, the 1962 Cuban Missile Crisis, and the 19641975 Vietnam War
Following the Cuban Missile Crisis, a new phase began that saw the Sino-Soviet split between China and the Soviet Union complicate relations within the communist sphere, leading to a series of border confrontations, while France, a Western Bloc state, began to demand greater autonomy of action

