Overview
- Mayor Kazumi Matsui publicly urged the national government not to treat the Three Non‑Nuclear Principles casually and asked that their status be preserved.
- National reviews of three security documents have prompted ruling‑party talks that are examining exceptions to the principles and defense options such as nuclear‑propulsion submarines.
- The government is advancing a multipurpose defense hub plan in nearby Kure that would include munitions storage and drone facilities, raising local planning and safety concerns.
- Matsui said he paused duties for treatment of a malignant brain tumor through late October, is still receiving daily outpatient care, and will decide with his doctor whether to attend the late‑November Nuclear Ban Treaty review in New York or send a deputy.
- The Three Non‑Nuclear Principles are a symbolic foundation of Japan's postwar pacifism, so any formal change could alter Japan's diplomatic stance, fuel domestic debate, and affect Hiroshima's role in global disarmament forums.