Why was there tension between the US and the US SR after World War II

Another cause of tension was that the Soviet Union was trying to spread communism. The U. S. was against communism and they took leadership of containment policy. The Containment policy was the U. S. approach to trying to prevent communism spreading

Another cause of tension was that the Soviet Union was trying to spread communism. The U. S. was against communism and they took leadership of containment policy. The Containment policy was the U. S. approach to trying to prevent communism spreading.