The Conflicts Between The United States and The Soviet Union During the time period 1945-1989, there were conflicts between the United States and the Soviet Union, since they had differences in their ways in government beliefs, the two countries then fell apart, and turned into a struggle known as the Cold War. There were many views on why the United States assumes global responsibility for containing communism. Reasons being that since the United States did not want any more spreading of communism, because it would probably lead to more war, or threats from the So