What was the Allied ultimatum to Japan issued on July 26, 1945 called?

The Allied ultimatum to Japan issued on July 26, 1945, was called the Potsdam Declaration.

The United States, United Kingdom, and China issued the statement during the Potsdam Conference. It called for the unconditional surrender of Japan’s armed forces and warned of “prompt and utter destruction” if Japan refused.

The declaration outlined major postwar terms, including disarmament, the removal of leaders responsible for aggression, and limits on Japanese sovereignty. It also promised that Japan would not be enslaved as a nation and could eventually participate in world trade.

The Soviet Union did not sign the declaration because it was still formally neutral in the war against Japan. Japan ultimately accepted its terms in August, leading to the surrender ceremony in September.