After Polarity in International Relataions

... aspects--ideological and military, and these were typically confused and conflated. The Truman Doctrine, which became the foundation of U.S. foreign policy aimed to stop both Soviet expansion and the spread of communism in Europe and elsewhere, assuming that these ... ... over by military conquest or by a communist revolution or coup, and communists took part in military actions. According to the Domino Theory, first advanced during Truman’s presidency, if a country came under the influence of Communists a “domino ...