What really happened when the world's two greatest superpowers went head to head during the Cold War? We Now Know is a major reappraisal of the struggle for political and ideological supremacy between the United States and the Soviet Union from 1945 to the Cuban Missile Crisis of 1962. Gaddis uses previously unavailable source material, including new documents from the Soviet Union, China and Eastern Europe, to produce the first-ever comparative international history of the Cold War. His book takes a detailed look at this unique conflict, putting forward new theories about why two ideologically opposed empires rose up and how their long power struggle dominated international affairs.