South Korea to fast-track nuclear submarines and AI-driven unmanned combat systems

In a parliamentary audit briefing, South Korea's Defense Acquisition Program Administration said it will accelerate the creation of a nuclear propulsion system and a blueprint for nuclear-powered attack submarines under the Jang Bogo N programme, with the first vessel expected in the mid-2030s and operational service by the late 2030s, aiming for a fleet of three 8,000-ton submarines using high-assay low-enriched uranium.

The agency also plans a full-scale acquisition of AI-driven combat unmanned assets, including uncrewed surface vessels, small attack drones and integrated counter-drone networks featuring laser air-defence weapons for border areas. Additional accelerations cover long-range artillery interceptors, the Gwanggaeto-III Batch-II Aegis destroyer project and a second batch of F-35A stealth fighters, intended to counter North Korean capabilities and enable the transfer of wartime operational control from the United States before the Lee Jae Myung administration ends in 2030.

To fund these initiatives, the government will increase R&D spending on AI semiconductors for guided missiles, physical AI robotics, advanced jet engines and small military reconnaissance satellites, including the 425-II project. The strategy reflects Seoul's broader push for a self-reliant defence posture amid evolving regional threats.