The U.S. intervention in the Korean War (1950-1953) resulted in a stalemate, with the Korean Peninsula remaining divided along the 38th parallel. Initially, U.S. forces, along with United Nations troops, were successful in repelling North Korean advances and pushing into North Korea. However, the intervention escalated after Chinese intervention, leading to a lengthy and costly conflict that ultimately ended in an armistice in 1953. The war solidified the division of Korea into North and South, leading to ongoing tensions that persist today, and established a precedent for U.S. military involvement in conflicts perceived as part of the broader Cold War struggle against communism.