Article 9 of the Japanese Constitution
Article 9 of Japan's 1947 Constitution — drafted under American occupation — formally renounces war as a sovereign right and prohibits Japan from maintaining "war potential." In practice, Japan created the Self-Defense Forces (SDF) in 1954, interpreting Article 9 as permitting forces for purely defensive purposes. The 2015 reinterpretation of Article 9 under Prime Minister Shinzo Abe — upheld by a Cabinet decision rather than a constitutional amendment — allowed Japan to exercise "collective self-defence," enabling it to come to the aid of an ally under attack for the first time.
- Article 9, Clause 1: Renunciation of war as a means of settling international disputes.
- Article 9, Clause 2: Prohibition on maintaining "war potential" and denial of the right of belligerency.
- 2015 reinterpretation: enabled Japan to participate in collective self-defence without amending the text of the Constitution.
- Japan's Self-Defense Forces (JSDF) comprise Ground, Maritime, and Air components with approximately 247,000 active personnel.
- Revising Article 9 through formal constitutional amendment requires a two-thirds supermajority in both houses of parliament plus a public referendum.
● Tracked since March 15, 2026 · last seen April 21, 2026 · updates as the daily brief publishes
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