Article 9 of the Japanese Constitution

A provision of Japan’s 1947 constitution renouncing war and prohibiting the maintenance of war potential. Its interpretation has shaped Japan’s defense policy and constitutional debate.

Article 9, Clause 1: The first clause of Article 9 renounces war and the threat or use of force to settle international disputes. It establishes the renunciation that anchors the article’s legal and political meaning.
Constitution of Japan: Japan’s supreme law, promulgated in 1946 and effective from May 3, 1947. Article 9 is one provision within this postwar constitutional framework.
Abe Shinzō: Japan’s prime minister from 2006 to 2007 and 2012 to 2020, who pursued security reforms and constitutional revision. His government’s 2014 reinterpretation expanded the scope of collective self-defense.
Pacifist constitution: A constitution that rejects or sharply limits war and the use of military force. Article 9 is a prominent example of constitutional pacifism.
Japanese pacifism: A postwar political and social commitment in Japan to avoiding war and limiting military force. Article 9 became a central constitutional expression of postwar pacifist identity.
Article 9, Clause 2: The second clause of Article 9 renounces military forces and the state’s right of belligerency. Its ban on war potential has driven disputes over Japan’s armed forces.
Allied occupation of Japan: The Allied administration of Japan from 1945 to 1952 following its surrender in World War II. Occupation authorities shaped the constitutional process in which Article 9 was drafted.
Nobusuke Kishi: Japan’s prime minister from 1957 to 1960, whose security policy prompted mass protest and constitutional debate. His efforts to revise the security treaty made Article 9 a focus of public opposition.
Constitutional amendment in Japan: The formal process for changing Japan’s constitution, requiring legislative approval and a national referendum. Formal amendment offers a route distinct from reinterpretation to alter Article 9’s text.
Japan–United States relations: The political, economic, and security relationship between Japan and the United States. Article 9 shaped how the alliance divided defense responsibilities after World War II.

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