The division of Korea into two halves had come at the end of World War II.
The United Nations Security Council responded to the attack by adopting (by a 9-0 vote) a resolution that condemned the invasion as a "breach of the peace." The Council did not have a Soviet delegate, since 6 months prior, the Soviet Union had left to protest the United Nation's refusal to seat a delegate from China. Truman quickly committed American forces to a combined United Nations military effort and named Gen. So why did the United States become involved in the Korean conflict?
The decision to intervene in Korea grew out of the tense atmosphere that characterized Cold War politics.
In an effort to avoid a long-term decision regarding Korea's future, the United States and the Soviet Union agreed to divide Korea temporarily along the 38th parallel, a latitudinal line that bisected the country.
This line became more rigid after 1946, when Kim Il Sung organized a communist government in the north---the Democratic People's Republic.
In 1949 China underwent a revolution that brought Mao Zedong and his Communist party into power.
The nationalists, led by Chiang Kai-Shek, had retreated to the island of Formosa (Taiwan) while they continued their war with mainland China.Mao quickly moved to ally himself with the Soviet Union, and signed a treaty with the Soviets in 1950.The Truman administration faced criticism from Republicans who claimed he had "lost" China.In Europe, Soviet intervention in Greece and Turkey had given rise to the Truman Doctrine and the Marshall Plan, which funneled aid to war-torn Europe in the hopes of warding off communist political victories.In early 1950, President Truman directed the National Security Council (NSC) to conduct an analysis of Soviet and American military capabilities., the Journal of the National Council for the Social Studies).While the end of World War II brought peace and prosperity to most Americans, it also created a heightened state of tension between the Soviet Union and the United States.Truman's statement of June 27 illustrates his concern with communist aggression and expansion.In it, Truman argues that "communism has passed beyond the use of subversion to conquer independent nations and will now use armed invasion and war." Truman's statement suggests that he believed the attack by North Korea had been part of a larger plan by communist China and, by extension, the Soviet Union.The Truman administration also faced internal criticism regarding its commitment to anticommunism at home. Although Mc Carthy was just warming up, the recent trials of Alger Hiss and others for espionage left the Truman administration apprehensive about its anticommunist credentials.Republican Senator Joseph Mc Carthy of Wisconsin had recently begun his infamous hunt for communists within the U. Truman and his advisors found themselves under increased domestic pressure not to appear "soft" on communism abroad.