In what year did the Cold War end?
The Cold War was a state of political and military tension after World War II between powers in the Western Bloc (the United States, its NATO allies and others) and powers in the Eastern Bloc (the Soviet Union and its allies in the Warsaw Pact).
Historians have not fully agreed on the dates, but 1947–1991 is common. It was termed as "cold" because there was no large-scale fighting directly between the two sides.
The Communist Party of the Soviet Union itself lost control and was banned following an abortive coup attempt in August 1991. This in turn led to the formal dissolution of the USSR in December 1991 and the collapse of Communist regimes in other countries such as Mongolia, Cambodia and South Yemen. The United States remained as the world's only superpower.