Seoul Demands Seat at US Nuclear Planning Table
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- Elbridge Colby told the August 5 Strategic Command Deterrence Symposium that the US is working to provide the president with "sensible nuclear options," including low-yield capabilities for regional contingencies, sparking fresh debate in South Korea about a possible return of tactical nuclear weapons.
- The US deployed nuclear weapons in South Korea from 1958 to 1991, peaking at approximately 950 warheads, before withdrawing them under President George H.W. Bush's Presidential Nuclear Initiatives—decisions made without a Korea-specific threat reassessment.
- An August 11 Reform Institute survey found 75.1% of South Koreans support redeploying US tactical nuclear weapons, with support reaching 88.4% among respondents in their 20s and 86.3% in their 30s.
- Asked to identify the single highest priority for addressing the North Korean nuclear threat, 36.3% chose strengthening the US nuclear umbrella and missile defense—exceeding support for an indigenous nuclear capability (26.9%), redeploying US tactical weapons (16.9%), or diplomacy (16.8%).
- On whether the US would retaliate with nuclear weapons if North Korea struck South Korea, even at the cost of American cities, respondents split almost evenly: 41.8% said yes, 41.7% said no.
- Washington already fields the W76-2 low-yield SLBM warhead and is developing the nuclear-armed sea-launched cruise missile (SLCM-N), providing regional nuclear options without permanent stationing on Korean or Japanese territory.
- The US-ROK Nuclear Consultative Group (NCG) was created to deepen South Korean participation in nuclear deterrence planning, but classified nuclear employment guidance means Seoul will not see the final document.
- The sea-launched nuclear cruise missile was revived during Trump's first term, targeted for cancellation under Biden's 2022 Nuclear Posture Review, and sustained through congressional appropriation—underscoring how partisan shifts in Washington have repeatedly reshaped the capabilities South Korea depends on.
Why it matters: With 75.1% of South Koreans backing US tactical nuclear redeployment and nearly half doubting US retaliation credibility (41.8% yes, 41.7% no), the gap between public sentiment and classified nuclear employment guidance is widening. The 36.3% preference for strengthening the alliance over indigenous armament (26.9%) gives Washington a window to deepen NCG consultation before the debate drifts toward an independent South Korean bomb.
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