The United States was a power in the Western Bloc during the Cold War.
The end of the Cold War and the dissolution of the Soviet Union in 1991 left the United States as the world 's sole superpower.
The Cold War was a state of geopolitical tension after World War II between powers in the Eastern Bloc -LRB- the Soviet Union and its satellite states -RRB- and powers in the Western Bloc -LRB- the United States , its NATO allies and others -RRB-.
