The Cold War defined international affairs after World War 2, especially following the Korean War. The document outlines 6 lessons on the Cold War: 1) The Origins of the Cold War as the US and USSR emerged as superpowers with opposing political/economic systems; 2) The Cold War Heats Up as China became communist and Korea was divided; 3) The Cold War at Home and McCarthyism led to accusations against innocent US citizens; 4) Two Nations Live on the Edge as the nuclear arms race and brinksmanship brought the two countries to the edge of war; 5) Mounting Tensions in the Sixties led to further conflicts; and 6) The End of the Cold War in the late 1980s.