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Explain why South Korea covertly explored nuclear weapons in the 1970s before North Korea obtained them, yet refrains from state-directed pursuit today despite severe North Korean nuclear threats.

August 14, 2026Pacific Focus

Credibility–Constraint Decoupling and South Korea's Nuclear Option: Explaining Salience and Policy Conversion

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IYInseok YooYeungnam University

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Implication

Qualitative analysis reveals how credibility-constraint decoupling shapes nuclear option salience in South Korea, highlighting why restraint architectures prevent active proliferation.

Key Points

Explain why South Korea covertly explored nuclear weapons in the 1970s before North Korea obtained them, yet refrains from state-directed pursuit today despite severe North Korean nuclear threats.
Formulated a credibility–constraint theoretical framework to analyze the dual role of extended deterrence in reassuring allies and constraining nuclear autonomy.
Assessed comparative historical and contemporary security environments, evaluating restraint architectures, fissile-material access pathways, and domestic institutional scrutiny.
Credibility–constraint decoupling occurs when confidence in allied security guarantees weakens while nonproliferation restraints remain binding, generating autonomy pressures and elevating nuclear salience.
Permissive technological and institutional conditions enabled covert option-building in the 1970s, whereas dense nonproliferation restraints, restricted material access, and democratic scrutiny keep contemporary nuclear salience politically bounded.

Cite This Study

Inseok Yoo (2026) studied this question.

synapsesocial.com/papers/6a7ec7aab70b84ec8b9142ca https://doi.org/10.1111/pafo.70037

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Implication

Qualitative analysis reveals how credibility-constraint decoupling shapes nuclear option salience in South Korea, highlighting why restraint architectures prevent active proliferation.

Credibility–Constraint Decoupling and South Korea's Nuclear Option: Explaining Salience and Policy Conversion

Discussion

Member takes

Implication

Key Points

Cite This Study

Credibility–Constraint Decoupling and South Korea's Nuclear Option: Explaining Salience and Policy Conversion

Discussion

Member takes

Implication

Key Points

Cite This Study

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