The United States have intervened in multiple nations around the world in order to stop the spreading of the communism and the influence of the former Soviet Union. Some of the interventions were in the neighborhood, like in Cuba, Nicaragua, Panama. Some where in East, Southeast, and Western Asia, like in Korea, Vietnam, Afghanistan.
The results of these interventions were mixed, with some being successful, and some being failures. In general, we can say that the United States managed to partially stop the spread of communism, but in some nations they just couldn't do so.