The policy of containment was the foreign policy approach that the US adopted after WWII, during the so-called Cold War Era. It aimed to stop the expansion of the URSS influence and the spread of communism all over the world.
Through this policy, the <u>US tried to influence non-communist nations to that they would side with them</u> on this fight. Moreover, the <u>US intervened on those countries that were being attracted by the URSS</u>, siding with the local forces that aimed to impede the sucess of communism.
Therefore, the world was highly polarized and two blocs were formed: the Eastern bloc of communist countries leaded by the URSS and the Western bloc of capitalist countries headed by the US.