Japan Defense Minister

Japan's defense minister has once again drawn attention to the country's 'nuclear taboo', questioning long-standing constraints on discussing nuclear weapons policy. The comments come from the only nation to have suffered atomic bombings, where official debate about nuclear options has long been politically sensitive. The remarks have reignited discussion at home and abroad about Japan's defense posture and regional security.

An adviser to Japan's prime minister says the planned expansion of defense spending will likely be spread over many years and should not become a source of significant market anxiety in any single year. The remarks come as Japan carries out a major, multiyear build-up of its military budget, raising questions among investors about how the costs will be absorbed.

Japan's defense chief Shinjiro Koizumi has repeated his call for the country to openly debate nuclear weapons and nuclear-powered submarines "without taboos," arguing that an unspoken atmosphere discourages such discussion. As head of the defense ministry, his remarks touch one of the most sensitive questions in postwar Japanese security policy, given Japan's non-nuclear principles and its history as the only nation attacked with atomic bombs.

Japan's Defense Minister Shinjiro Koizumi is calling for an open national debate on nuclear issues, including the possibility of nuclear-powered submarines. Any move to discuss nuclear options marks a highly sensitive shift in Japan, the only country to have suffered atomic bombings, where postwar policy has long adhered to the three non-nuclear principles. The proposal is drawing attention to how far Tokyo's security debate may go amid regional tensions.