South Korea and U.S. Advance Nuclear‑Submarine Deal and Wartime Command Transfer on Jan. 26, 2026
Updated (4 articles)
Defense chiefs convene in Seoul to set agenda On 26 January 2026, South Korean Defense Minister Ahn Gyu‑back met U.S. Under Secretary of Defense for Policy Elbridge Colby at the defense ministry compound, discussing nuclear‑powered submarine acquisition, wartime operational‑control transfer, and broader security cooperation [1][2][3]. Both officials framed the dialogue as part of a “historic turning point” for the alliance, citing a joint fact sheet from the 2025 leaders’ summit and a recent Security Consultative Meeting [1][3]. The meeting concluded with Colby’s scheduled visit to Camp Humphreys before departing for Japan [1][2].
Nuclear‑submarine program receives explicit U.S. backing Colby described South Korea as a “model ally” and pledged continued U.S. support for Seoul’s nuclear‑submarine push, calling the partnership a landmark for alliance elevation [1][2][3]. Ahn emphasized that joint work on the submarines would strengthen deterrence against North Korea and accelerate concrete defense outcomes within the year [1][3]. The discussion linked the program to the broader goal of enhancing the peninsula’s defense posture [1][4].
Seoul presses for wartime command authority Ahn stressed the need to regain wartime operational control of South Korean forces to enable a Korea‑led defense of the peninsula [1][2][3]. He argued that stepped‑up cooperation with Washington is essential to shift command authority from U.S. to South Korean hands [1][3]. Colby acknowledged the request and indicated U.S. willingness to work toward a phased transfer [1][2].
U.S. National Defense Strategy frames expanded Korean role The Pentagon’s strategy released the week before the talks characterizes Seoul as capable of taking “primary” responsibility for deterring North Korea with “critical but more limited” U.S. support [1][2][3]. Both ministers cited the document as a blueprint for a larger Korean contribution to conventional and strategic threat mitigation [1][3]. The strategy signals an expectation that South Korea will assume greater burden while the United States maintains extended deterrence [1][4].
Joint fact sheet and diplomatic outreach set implementation path Ahn referenced the post‑summit fact sheet and the Security Consultative Meeting as foundations for translating diplomatic commitments into tangible outcomes this year [1][3]. Colby’s itinerary also included a meeting with South Korea’s National Security Adviser Wi Sung‑lac, underscoring coordinated diplomatic‑defense efforts [1]. Both sides pledged ongoing coordination to ensure regional stability and rapid execution of agreed‑upon steps [4].
Sources
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1.
Yonhap: South Korea and U.S. Discuss Nuclear Submarines, Wartime Troop Control – Details the full agenda of the Jan 26 meeting, including Colby’s Camp Humphreys visit and remarks on the alliance’s “historic turning point” .
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2.
Yonhap: South Korea and U.S. Discuss Nuclear Submarines and Troop‑Control Transfer – Highlights the same talks with emphasis on the “model ally” label and upcoming Japan trip .
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3.
Yonhap: South Korean Defense Minister and U.S. Under Secretary Discuss Nuclear Submarines and Troop Control – Focuses on the broader shift in alliance dynamics and the strategic significance of the submarine collaboration .
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4.
Yonhap: South Korea’s Nuclear Submarine Push Tied to U.S. Alliance, Says FM Cho – Presents Foreign Minister Cho’s perspective linking the submarine program to deterrence and alliance stability, adding diplomatic context .
Timeline
Mar 4, 2025 – The U.S. Senate Armed Services Committee confirms Elbridge Colby as Under Secretary of Defense for Policy, positioning him to shape future U.S.–South Korea security policy[4].
2025 (leaders’ summit) – U.S. and South Korean leaders hold a summit that produces a joint fact sheet outlining deeper defense cooperation, including plans for South Korea’s nuclear‑powered submarine program[1][2].
2025 (Security Consultative Meeting) – Senior officials convene a Security Consultative Meeting, framing the alliance as entering a “historic turning point” and setting the agenda for expanded joint projects[1][3].
Mid‑Jan 2026 – The Pentagon releases a new National Defense Strategy that characterizes Seoul as capable of taking “primary” responsibility for deterring North Korea with “critical but more limited” U.S. support, signaling a larger Korean role in regional security[1][3].
Jan 26, 2026 – South Korean Defense Minister Ahn Gyu‑back meets U.S. Under Secretary of Defense for Policy Elbridge Colby at the defense ministry compound to discuss the nuclear‑submarine push, wartime operational‑control transfer, and broader alliance issues[1][2].
Jan 26, 2026 – Ahn cites the 2025 joint fact sheet and Security Consultative Meeting, declares the alliance at a “historic turning point,” and urges concrete defense‑cooperation results within the year[1][3].
Jan 26, 2026 – Colby describes South Korea as a “model ally,” pledges continued U.S. backing for the nuclear‑submarine acquisition, and calls the program a landmark for elevating the alliance[1][4].
Jan 26, 2026 – Both officials reference the new National Defense Strategy, using it as a framework for South Korea’s expanded deterrence role and a reduced but critical U.S. commitment[1][3].
Jan 26, 2026 – Ahn stresses the importance of regaining wartime operational control of South Korean forces to enable a Korea‑led defence of the peninsula, linking it to stepped‑up cooperation with Washington[1][3].
Jan 26, 2026 – Foreign Minister Cho Hyun meets Colby at a breakfast, links the nuclear‑submarine program to stronger deterrence and alliance stability, and calls for working‑level talks to implement summit agreements[4].
Jan 26, 2026 – After the ministerial talks, Colby tours Camp Humphreys and meets South Korea’s National Security Adviser Wi Sung‑lac, underscoring integrated deterrence discussions[1].
Jan 27, 2026 (planned) – Colby departs Seoul for Japan following his Camp Humphreys visit, continuing his regional itinerary after the Korea‑U.S. security talks[1].
2026 (future working‑level talks) – South Korean and U.S. officials schedule working‑level negotiations later in the year to translate summit commitments into concrete steps on nuclear‑submarine acquisition and the transfer of wartime troop‑operation control[4].