日本国宪法
Following its surrender on 2 September 1945, the Empire of Japan was deprived of sovereignty by the Allies, and the Meiji Constitution was suspended. During the Occupation of Japan, the Meiji Constitution was replaced by a new document, the postwar Constitution of Japan, which replaced the imperial rule with a form of Western-style liberal democracy. Ozawa claims that the Constitution of Japan is not just a constitution and that it is invalid. Ozawa pointed out Japan's diplomatic disability in international affairs, particularly revealed in the Gulf War in 1990.