Japan Moves to Nuclear-Powered Submarines | The Australian Naval Institute

Japan moves to nuclear-powered submarines | The Australian Naval Institute

As geopolitical tensions escalate in the Indo-Pacific region, Japan is emerging as a formidable contender in underwater naval power, Mondial News reports. Once restrained by pacifist policies and constitutional limits, Tokyo is now steering toward the development of its own nuclear-powered submarines-a move that could reshape the strategic balance across Asia. In this report for […]

Japan defense chief: We must consider nuclear-powered subs

Sentry Japan must consider acquiring nuclear-powered submarines, the nation’s defense minister said. “The environment surrounding Japan is truly becoming so severe that we must debate whether to continue with diesel [propulsion systems] as we have, or to opt for nuclear-powered submarines,” Shinjiro Koizumi said in November 2025. Japan is not the only United States ally …