What we talk about when we talk about US strategic ‘credibility’ – from Vietnam to Iran

By Christopher Nichols, Professor of History, Hayes Chair National Security Studies, The Ohio State University, Kaveri Sarkar, PhD Candidate in Political Science, The Ohio State University, The Conversation · October 9, 2026

‘Credibility is on the line’ has long been a refrain guiding U.S. foreign policy.

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