What was the cold war? what was the foreign policy of the U. S. during the cold war?

The Cold War was a diplomatic war between the U. S. and U. S. S. R. lasting from the end of WW2, 1947, to when the U. S. S. R. was dissolved in 1991. During this period their was a lot of political and military tension between the two countries. The foreign policy the U. S. held during this time was called containment an idea from the Truman Doctrine. The U. S. wanted to contain/stop the spread of Communism. They tried to due so in a multitude of ways such as instilling the Marshall Plan.