June 27, 1950

Korean War

Truman commits U.S. air and naval forces to South Korea’s defense

The same statement that committed American forces in Korea sent the Seventh Fleet into the Taiwan Strait and accelerated assistance in Indochina.

A statement written at Blair House

North Korea had invaded on 25 June 1950 and ignored the Security Council's demand to cease hostilities and withdraw. On 27 June, Truman publicly announced that he had ordered U.S. air and sea forces to give South Korean government troops cover and support.

The decision had been settled the previous evening at Blair House, where the president was living while the White House underwent renovation; Dean Acheson recommended full air and naval support south of the 38th parallel. The announcement came publicly around noon the next day.

Seoul fell to North Korean forces that same day.

Air and sea only, south of the 38th parallel

The initial combat authorization was limited geographically to operations south of the 38th parallel. MacArthur, as Commander in Chief, Far East, received authority to employ Far East Command air and naval forces in support of South Korea.

The same statement ordered the Seventh Fleet to prevent attacks on Taiwan, called on the Chinese Nationalist government to halt operations against the mainland, strengthened U.S. forces in the Philippines, and accelerated aid to French and associated forces in Indochina.

U.S. fighters were already flying: F-82 crews covering evacuation operations over Korea shot down three attacking North Korean aircraft that day.

Two Security Council votes, two days apart

On 27 June the Security Council adopted Resolution 83, recommending that members furnish the assistance necessary to repel North Korea's armed attack and restore peace. The vote was 7–1 with two abstentions.

Resolution 83 is routinely compressed together with Resolution 82 of 25 June, which condemned the attack and demanded withdrawal. They were separate actions, and the UN unified command was established by a further resolution on 7 July.

Nor was this yet an unrestricted commitment of ground troops: supporting Army units were authorized on 28 June, and on 30 June Truman authorized MacArthur to employ all available forces, including ground combat troops.

Sources

Researched 24 Aug 2026 8 sources not yet audited

How this was checked

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What the sources leave uncertain

The public announcement is securely dated June 27, but Truman approved fuller air and naval support at a Blair House meeting on the evening of June 26, Washington time. The event is conventionally dated to the June 27 statement and implementation.
This was not yet an unrestricted commitment of U.S. ground combat forces; that broader authorization followed on June 30.