Core Viewpoint - Japanese Prime Minister Fumio Kishida has reiterated the possibility of introducing nuclear-powered submarines, indicating a shift in Japan's defense policy amidst domestic concerns and opposition [1] Group 1: Government Statements - Kishida stated that the ruling Liberal Democratic Party and the Japan Innovation Party have reached a coalition agreement to advance discussions on next-generation submarines, although the specific type of propulsion remains undecided [1] - Kishida emphasized that no options would be ruled out in enhancing deterrence and response capabilities [1] - Defense Minister Nobuo Kishi also hinted that no decision has been made regarding the propulsion source for the next-generation submarines, but the possibility of nuclear-powered submarines is not excluded [1] Group 2: Public Concerns - Japanese civic groups and media have raised alarms that introducing nuclear submarines would violate Japan's "Three Non-Nuclear Principles" and contradict the Atomic Energy Basic Law, which restricts nuclear energy use to peaceful purposes [1] - The proposed shift in policy is seen as conflicting with Japan's "defensive posture" [1]

Core Viewpoint - Japan's Defense Minister visited a U.S. nuclear submarine, highlighting Japan's interest in acquiring next-generation submarines, including nuclear-powered ones, amidst rising regional security concerns [1] Group 1: Defense Policy and Military Developments - Japan's ruling party and the Japan Innovation Party are pushing for the acquisition of next-generation submarines, including nuclear-powered ones [1] - There is significant public opposition to the acquisition of nuclear submarines, with citizen groups arguing it contradicts Japan's "defensive posture" and could escalate regional tensions [1] - A senior official from the Japanese Prime Minister's office suggested that Japan should consider acquiring nuclear weapons due to the deteriorating security environment, which has sparked strong criticism from various political figures and organizations [1] Group 2: Legal and Regulatory Considerations - The potential acquisition of nuclear submarines may violate Japan's "Fundamental Law on Atomic Energy," which restricts nuclear research and development to peaceful purposes [1] - Any move to acquire nuclear submarines would require amendments to the "Fundamental Law on Atomic Energy" [1]