Tensions and suspicions between the United States and the Soviet Union grew partly during WWII because of Soviet disregard to Allied goals, and dramatically increased in the post-war world when the spread of communism seemed to be threatening the free world that Franklin D Roosevelt had envisioned.
How to implement the agreement at Yalta was the purpose of Potsdam and tensions between Russia and the U.S. grew between both nations; Truman was now president of the U.S.and was disturbed by Stalin's movement into eastern European nations before WW II's end.
Americans were at first excited in help of the upset. Notwithstanding, after some time divisions of sentiment ended up clear among federalists and enemies of federalists.
