What is the Cold War ?

The Cold War was a period of geopolitical tension between the Soviet Union and the United States and their respective allies, the Eastern Bloc and the Western Bloc, after World War II. The period is generally considered to span the 1947 Truman Doctrine to the 1991 dissolution of the Soviet Union.:

Answer- State of political hostility between countries characterized by threats, propaganda, and other measures short of open warfare.

the state of political hostility that existed between the Soviet bloc countries and the US-led Western powers from 1945 to 1990.