The document provides an overview of the Cold War between the United States and Soviet Union from its origins after World War 2 through the collapse of the Soviet Union in the early 1990s. It discusses the ideological tensions between capitalism and communism that fueled the conflict and summarizes key events including the Truman Doctrine, Marshall Plan, Berlin Airlift, NATO alliance, arms race, space race, Cuban Missile Crisis, Vietnam War, and fall of communist governments in Eastern Europe.