Nuclear Disarmament and Non-Proliferation
The Proliferation Security Initiative (PSI)
December 17, 2025
Japan has been actively participating in PSI activities and has also been working to promote understanding of PSI, based on the standpoint that preventing the transfer and transport of weapons of mass destruction, missiles and related materials contributes to the improvement of Japan's national security.
Proliferation Security Initiative (PSI) Maritime Interdiction Exercise "Pacific Shield 25" hosted by Japan (December 2025)
The archives of past activities related to PSI are available on the website of the National Diet Library's Web Archiving Project.