Roark, James L. The American Promise: A History of the United States. Boston, MA: Bedford/St. Martin's, 2008. Print.
The Cold War was a period of economic, political and military tension between the United States and Soviet Union from 1945 to 1991. After the Second World War, United States and the Soviet Union became the two most powerful countries of the time. They were rivals in which the Soviet Union wanted to gain more land and U.S. was doing everything in its power to make sure that didn’t happen. The dislike these two had for each other led to national security, diplomatic tensions, and proxy wars. The United States and U.S agreed to separate Berlin after their meeting disputes. The soviets wanted to obtain Poland but at the time President Harry Truman rejected this need and instead revealed the atomic bomb he had been working on. The Soviet Union almost immediately began to plan their counter attack by putting more time in its military. But Truman in September 1945 went ahead and cut off the Lend-Leason Act, which basically was aid, the United States had been providing to military in beleaguered nations like Britain, France, and Soviet Union during the Second World War. Clearly though the plan failed when as the Soviets decided to get satellite states to make up for the lost. George Kennan at the time used a long telegram to communicate his thought about soviet expansion, which led to many American’s to live in fear. This fear led to the reason the policy of containment. In 1947 Truman passed the Truman Doctrine to hopefully stop this fear and the expansion of communism. The doctrine basically gave out money to third world nations like Greece and Turkey so that they could become allies and help United States with this battle. That same year the Marshal plan was also created in which it was more funding given out to help get European nations rise up from what they lost on the war. The plan was that while they helped the nation they would also make sure that communism did not create itself in what can be seen as new government. Another big form that Truman passed after was the National Security Act, which was the birth of the Air Force, National Security Council, Central Intelligence Agency, and Department of Defense which would focus on protecting the United States. Containment although was probably the best source for the United States because it practically closed off the Soviet Union and did not let it expand communism to other close states. During this time United States started to realize that their might have been communism in more places then just the soviet union so the closed off perimeter of the soviet union grew. Truman played a huge roll through out the cold war and his negative approach towards communism led to make the N.A.T.O. This was Britain and Canada agreeing with United States about the expansion of communism that also argued about communism being trouble and...