Include Seoul In Tactical Nuclear Discussions, U.S. And South Korean Officials Say

U.S. and South Korean officials are being urged to open direct talks with Seoul about the possible role of short-range nuclear arms in deterring North Korea, a move supporters say would strengthen alliance decision-making and legitimacy. The recommendation comes as Pyongyang accelerates both warhead development and delivery systems, prompting allies to reassess the credibility of extended deterrence in Northeast Asia.

South Korea has long backed the 1991 declaration that pledged the peninsula would remain free of nuclear weapons, and successive governments have stressed denuclearization as the ultimate aim. But security realities are shifting. Washington’s recent reviews of its nuclear posture and the mechanics of alliance consultation have prompted calls to broaden the agenda of the existing U.S.-ROK consultative mechanism so Seoul can weigh in on contingency planning, escalation management and how — or whether — forward-deployed tactical systems might be employed.

Advocates argue that excluding Seoul from these discussions undercuts both trust and effectiveness. If Washington makes deployment or employment decisions without Seoul’s participation, it risks creating fractures within the alliance when seconds matter. “Allied cohesion is part of deterrence,” said a Seoul-based security analyst. “If the Korean government feels sidelined, public and parliamentary support for deterrent measures will be harder to sustain.” Opponents counter that any overture to host or discuss nuclear arms would provoke strong reactions from neighboring capitals and complicate diplomacy aimed at reducing the peninsula’s nuclear threat.

Domestic politics in South Korea complicate the picture. Opinion is mixed: roughly one in three citizens express openness to stronger nuclear protections if it increases security, while many others remain deeply attached to the denuclearization pledge and fear escalation. Lawmakers in Seoul have shown both caution and willingness to revisit alliance arrangements, making transparent consultation the likeliest path to avoid sudden policy rifts that opponents or rivals could exploit.

Regionally, adding Seoul to conversations about short-range nuclear options would be watched closely by Beijing and Moscow, which view any shift toward stationing nuclear systems near their borders as destabilizing. Tokyo and Canberra would also demand reassurance that decisions would be coordinated across allies. To limit fallout, experts propose a set of guardrails: clearly defined aims for any nuclear role, time-limited arrangements, robust verification steps and a public diplomacy campaign to explain choices to domestic and foreign audiences.

Policy makers should weigh the risks of exclusion against the risks of rushing deployments. A more formal, expanded U.S.-ROK working group could draft scenarios, legal assessments and communication protocols that preserve the peninsula’s denuclearization objective while strengthening alliance deterrence. It won’t be simple. But bringing Seoul into the conversation is likely the only way to ensure shared responsibility and credible responses if crisis ever arrives.