Who was the US President during the Korean War?

During the Korean war the United States had two presidents. Harry Truman was President when it began in 1950, and Dwight Eisenhower was elected in 1952 and was President when the armistice was signed in 1953.

The president of South Korea was Syngman Rhee.
The Korean War began on June 25, 1950 and lasted until July 27, 1953. Harry S. Truman was the President of the US at the time. Truman served the oath of office from April 1945 to January of 1953.

The war was the result of the North Koean invasion of South Korea. The UN voted to send troops to end the invasion.