South Korea and U.S. Set Parallel 2026 Talks on Nuclear Submarines, Enrichment, and Reprocessing
Updated (2 articles)
Coordinated launch of working‑level discussions announced National Security Adviser Wi Sung‑lac told reporters in Washington that South Korea and the United States will begin simultaneous, working‑level talks in early 2026 to implement the agreements reached at their recent summits [1][2]. He emphasized that the discussions will start “all at once,” reflecting a coordinated diplomatic rhythm. The timing follows a series of high‑level meetings in the United States earlier this week.
Three core topics identified for parallel negotiations The agenda will cover civil uranium enrichment, spent‑fuel reprocessing, and the development of nuclear‑powered submarines [1][2]. Wi listed these items as the primary pillars of the upcoming talks, indicating no single issue will be prioritized over the others. Both articles note that the topics stem directly from the joint fact sheet released after the August and October summits.
Separate task forces created to prepare issue‑specific dialogues Wi’s office has established distinct task forces: one focused on the submarine program and another on uranium enrichment [1][2]. These groups are tasked with drafting technical proposals and aligning policy positions before the formal discussions begin. The structure aims to streamline negotiations and ensure each subject receives dedicated expertise.
Section 91 agreement planned to transfer nuclear materials for submarines The allies intend to sign a supplemental agreement under Section 91 of the U.S. Atomic Energy Act, which permits the president to authorize the transfer of nuclear materials for military purposes [1][2]. This legal framework is designed to support Seoul’s ambition to build nuclear‑powered attack submarines. Both reports highlight the agreement as a critical component of the submarine‑related talks.
Joint fact sheet underscores U.S. commitments and alliance momentum The fact sheet issued after the summits outlines U.S. pledges to assist South Korea with civil uranium enrichment, peaceful spent‑fuel reprocessing, and the advancement of its submarine program [1][2]. Wi described the alliance as “exemplary” and said the new talks will build on that momentum to accelerate follow‑up actions. The documents serve as the official reference for the scope of forthcoming discussions.
Sources
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1.
Yonhap: S. Korea, U.S. plan simultaneous talks next year on implementing summit agreements: Details Wi Sung‑lac’s announcement, lists the three core topics, notes the Section 91 submarine agreement, mentions a joint fact sheet, and adds Wi’s upcoming Japan visit for trilateral cooperation .
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Yonhap: S. Korea, U.S. to launch simultaneous discussions on summit deals next year: Highlights the coordinated start of parallel talks, emphasizes the creation of separate task forces, repeats the Section 91 plan, and focuses on the alliance’s exemplary status without mentioning the Japan trip .
Timeline
Aug 2025: At the August 2025 summit, the United States and South Korea issue a joint fact sheet that commits the U.S. to support Seoul’s civil uranium enrichment, spent‑fuel reprocessing for peaceful uses, and the development of nuclear‑powered submarines, establishing the policy framework for later working‑level talks. [1][2]
Oct 2025: The October 2025 summit reaffirms the earlier commitments, adds detail on technology transfer, and sets the stage for a Section 91‑based agreement that would permit the U.S. to supply nuclear material for military submarine construction. [1][2]
Dec 20‑21, 2025: National Security Adviser Wi Sung‑lac meets U.S. officials in Washington, declares that “talks will start all at once” in the new year and outlines parallel working‑level discussions on civil uranium enrichment, spent‑fuel reprocessing, and nuclear‑powered submarines, while noting that separate task forces for submarines and uranium have already been created. [1][2]
Jan 2026 (planned): South Korea and the United States launch simultaneous, issue‑specific working‑level talks covering uranium enrichment, reprocessing, and submarine development, aiming to accelerate implementation of the summit agreements and maintain the “exemplary” alliance described by both sides. [1][2]
Jan 2026 (planned): Wi Sung‑lac travels to Japan to meet Foreign Minister Motegi, discusses bilateral and trilateral cooperation with the United States, and prepares for the Korea‑Japan summit scheduled for the following month, signaling a broader regional security coordination. [1]
2026 (planned): The allies intend to sign a separate Section 91 agreement authorizing the transfer of nuclear materials for Seoul’s submarine program, formalizing the legal basis for U.S. support of the nuclear‑powered fleet. [1][2]