Which declaration did Japan accept when its government announced surrender in August 1945?

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Japan accepted the Potsdam Declaration when its government announced surrender in August 1945.

The declaration was issued on July 26, 1945, by the United States, the United Kingdom, and China. It called for Japan’s armed forces to surrender and warned of “prompt and utter destruction” if Japan continued the war. The Soviet Union was not yet a signatory when the declaration was first issued, but it later joined the war against Japan.

Japan initially rejected the declaration’s demand for surrender. After the atomic bombings of Hiroshima and Nagasaki and the Soviet Union’s entry into the Pacific War, Japanese leaders reconsidered. The government transmitted its acceptance through diplomatic channels, while debate continued over the status and future of the emperor.

The Potsdam Declaration is different from the Instrument of Surrender. The declaration set out Allied terms and demands; the Instrument, signed on September 2, formally recorded Japan’s capitulation. Confusing these documents can lead to mixing up July, August, and September events.

Source: Wikipedia · fact-checked Sept. 2026

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