South Korea pushes nuclear-powered submarine plan

Seoul has officially greenlit its ambitious plan to develop nuclear-powered attack submarine (SSN), targeting the mid-2030s for the first vessel's operational deployment. This move by the Republic of Korea Navy (ROKN) represents a decisive strategic shift, aiming to bolster its underwater reconnaissance and deterrent capabilities against an increasingly assertive North Korea and an expanding Chinese naval footprint in the region. The decision escalates an already simmering naval arms race across Northeast Asia. It directly responds to Pyongyang's accelerated Ballistic Missile Submarine (SSBN) development and enhanced North Korean SLBM program, which now poses a credible second-strike threat. Simultaneously, China's People's Liberation Army Navy (PLAN) continues its relentless modernization, fielding a growing fleet of advanced submarines and surface combatants, forcing Seoul to rethink its conventional naval strategy. While the technological hurdles are immense, including securing access to reactor-grade uranium and navigating potential challenges to the Korean Peninsula Denuclearization Declaration (1992), the immediate focus will be on domestic industrial capacity and securing tacit U.S. support. Expect intense diplomatic maneuvering and a recalibration of Trilateral Security Cooperation as regional powers grapple with the ripple effects of South Korea's nuclear propulsion pursuit.