Which war did the US fight after world war ii in order to keep countries in Asia from becoming communist?

After World War II, the United States fought in the Korean War (1950-1953) to prevent the spread of communism in Asia. The war began when North Korea, backed by the Soviet Union and China, invaded South Korea. The U.S. intervened as part of a United Nations coalition to support South Korea and maintain its sovereignty against communist expansion. This conflict was part of the broader Cold War strategy to contain communism.