The Constitutional Revision Research Project seeks to follow, analyze, and document constitutional discussion in Japan.
Mainichi ShimbunThe Constitution of Japan (also known as the Postwar Constitution) went into effect in 1947, replacing the Meiji Constitution of 1890. It is recognized as the oldest unamended constitution in the world as of 2022, having never undergone revision in over 70 years since its promulgation. Throughout this time, constitutional revision has become an important subject of vigorous debate and discussion in Japan and around the world.*
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Takaichi Cabinet Inaugurated, Diplomacy Continues — Prime Minister Expresses Commitment to Constitutional Revision in Policy Speech
October–November 2025
The APEC summit in South Korea concluded on November 1. Prime Minister Sanae Takaichi described her series of diplomatic engagements as “intensive and meaningful” (see related NHK report).
The coalition cabinet of the Liberal Democratic Party and Japan Innovation Party, led by Takaichi, was inaugurated on October 21. In her policy speech to the Diet on October 24, she expressed her intention to initiate a constitutional amendment during her term.
[Source: Prime Minister’s Office of Japan]
*The coalition agreement between the two parties specifies the establishment of a joint committee to draft a revision of Article 9 (see related report by Nikkei).
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