Which U.S. president announced Japan’s impending surrender to Americans in August 1945?

Harry S. Truman announced Japan’s impending surrender to Americans in August 1945.

Truman informed the American public that Japan had communicated its willingness to accept the terms of the Potsdam Declaration. He also emphasized that the formal proclamation of V-J Day would wait until Japan signed the surrender terms.

The announcement came during the final weeks of Truman’s first year as president. He had become president after Franklin D. Roosevelt died in April 1945, and he inherited responsibility for decisions concerning the final phase of the Pacific War.

Japan’s announcement and the formal signing were separate events. Hirohito addressed the Japanese people on August 15, while the Japanese delegation signed the Instrument of Surrender on September 2. Truman therefore distinguished between the public announcement of capitulation and the legal-military ceremony that completed the surrender. This distinction explains why August 15 and September 2 are both associated with V-J Day.