Neither Moscow's declaration of war nor the bombings ended it: even after Nagasaki and the USSR's invasion of Manchuria the obstacle remained the position of the Emperor which had been omitted from the Potsdam ultimatum, contrary to the advice of key Truman advisers. It was the US clarification of Aug 11 that "the authority of the Emperor and the Japanese Government to rule the state shall be subject to the Supreme Commander of the Allied Powers" that made surrender possible by implying the throne's survival, even if shorn of its former powers.