After the Nagasaki bombing, Japan’s Supreme War Council was divided three to three over the surrender terms.
The council, often called the Big Six, met on August 9, 1945, amid the bombing of Nagasaki and the Soviet invasion of Manchuria. Three members supported accepting the Potsdam terms with a condition protecting the imperial institution. Three others demanded additional conditions, including limits on occupation and Japanese control over disarmament and war-crimes matters.
Because the six members were evenly divided, the deadlock had to be resolved by Emperor Hirohito. He supported accepting the Allied terms and helped break the political impasse. The emperor’s intervention was unusual because Japan’s constitutional system formally placed governing authority in the imperial institution but traditionally emphasized cabinet and military decision-making.
The three-to-three split is not the same as a vote by the entire Japanese government or population. It describes the division within the Supreme War Council during the critical August 9 meeting. The final decision was later communicated to the Japanese people through the emperor’s radio announcement.