Published：May 15, 01:28Last updated：May 31, 06:59

South Korea Seeks U.S. Support for Nuclear Submarine Program Amid Regional Security Concerns

May. 15, 2026 01:28

South Korea plans to unveil a nuclear-powered submarine road map by May 2026, despite slow progress in U.S. negotiations. The plan outlines defensive goals and nonproliferation compliance, following a 2025 agreement with the U.S. to support the project.

Summarized

22News

9Media

May. 29, 2026 16:18

South Korea is advancing plans for nuclear-powered submarines as regional rivals enhance their undersea military capabilities. This move reflects growing concerns over a military buildup in the region. The development underscores Seoul's efforts to bolster its defense strategy. The initiative may escalate tensions among neighboring countries with competing interests.

May. 31, 2026 06:59

South Korean Defense Minister Ahn Gyu-back sought bipartisan U.S. congressional support for South Korea's nuclear-powered submarine project during meetings with U.S. lawmakers at the Shangri-La Dialogue in Singapore on May 31, 2026. Ahn met with several congressmen and senators, including Reps. Pat Harrigan, Gregory Meeks, and Michael Baumgartner, and Senators Tammy Duckworth and Pete Ricketts. The U.S. has backed South Korea's bid to build nuclear-powered submarines, with the first one expected to launch in the mid-2030s. Ahn also emphasized the importance of maintaining a robust defense posture with the U.S. amid regional security uncertainties.

South Korea is accelerating its nuclear-powered submarine program to counter North Korean threats, with plans to deploy its first domestically built vessel by the mid-2030s. The project, announced by Defense Minister Ahn Gyu-back, will use low-enriched uranium while adhering to nonproliferation obligations. Recent developments include Ahn's meetings with U.S. lawmakers at the Shangri-La Dialogue to secure bipartisan support, emphasizing compliance with the Nuclear Non-Proliferation Treaty (NPT) and the need for U.S. cooperation due to uranium enrichment restrictions. The initiative reflects growing regional security concerns as neighboring countries enhance their undersea capabilities Huanqiu+2.

🚢 Naval Expansion Plans

The U.S. Navy plans to double its nuclear submarine production, targeting at least three vessels annually from 2027-2031. This includes Columbia-class and Virginia-class submarines as part of a $305.7 billion budget to expand the fleet to 450 units by 2031. Pentagon officials acknowledge challenges in maintaining naval superiority amid shipbuilding delays RIA Novosti+1.

🇰🇷 South Korea's Defense Roadmap

Defense Minister Ahn Gyu-back outlined a clear timeline: preliminary research and feasibility studies will precede the development phase, with operational deployment expected post-2030s. The submarines aim to address regional security gaps, particularly against North Korea's advancing missile capabilities. The program is part of broader defense modernization, including AI and drone technologies Yonhap News Agency+2.

🌏 Geopolitical Implications

The project marks a significant step in South Korea's military autonomy, balancing U.S. alliances with self-reliance. While Washington supports Seoul's submarine ambitions, systemic issues in allied shipbuilding capacities could affect collaborative timelines. The initiative also signals a hardening stance against Pyongyang's nuclear threats and may escalate regional tensions Yonhap News Agency+3.

Jang Bogo NNorth KoreaAhn Gyu-backLee Jae MyungColumbia-class submarines