The document provides an overview of the Cold War between the United States and Soviet Union from 1945 to 1991. It discusses key events and policies that defined the escalating tensions and arms race between the two superpowers, including Winston Churchill's "Iron Curtain" speech in 1946 marking the beginning of the Cold War; the Truman Doctrine and Marshall Plan establishing policies of containment and economic assistance for democratic nations; the formation of NATO in 1949; the Korean War from 1950 to 1953; McCarthyism and the Second Red Scare in the 1950s; and the Eisenhower administration's policies towards the Cold War in the 1950s.