Discuss the origins and major events of the Cold War from 1945 through 1991 Discuss the origins and major events of the Cold War from 1945 through 1991. How did each administration from Harry Truman's through George H. W. Bush's administration approach the Cold War and what military involvements, including proxy conflicts and diplomatic incidences did the United States as well as the Soviet Union become involved in that were Cold War related?