The Potsdam Declaration
On July 17, 1945, leaders of the Soviet Union, the United States and the United Kingdom held a conference in Potsdam outside Berlin, to discuss, inter alia, how to completely defeat the Japanese fascists after Nazi Germany’s surrender,. Japan was issued an ultimatum on July 26, which was known as the Potsdam Declaration. The document was drafted by the United States, and released with the approval of China.
The Declaration declared that all the Allied Nations were poised to continue their strikes against Japan until it ceased to resist, and that the government of Japan must immediately proclaim the unconditional surrender of all Japanese armed forces. It reaffirmed that the terms of the Cairo Declaration should be carried out, and that Japanese sovereignty should be limited only to the islands of Honshu, Hokkaido, Kyushu, Shikoku and such minor islands as the Allies determined. It also declared that the Japanese military forces should be completely disarmed, and that stern justice should be meted out to all war criminals.
The Potsdam Declaration and the Cairo Declaration contain interlocking provisions of international law that unequivocally affirm the legal basis for the return of Taiwan and other Chinese territories stolen by Japan from China.