Nuclear mushroom cloud. CREDIT: Boxiang/Stock.adobe.com.

CREDIT: Boxiang/Stock.adobe.com.

Nov 3, 2025 Report

Nuclear Complacency

This report, from Carnegie Council and The Harry Frank Guggenheim Foundation, highlights the findings of a one-day convening of experts who addressed a particular aspect of the current international strategic nuclear environment—nuclear complacency.

Participants were asked to reflect on why complacency has emerged as an unexpected and difficult challenge, and what steps can be taken to address it. The results were both descriptive and prescriptive, sketching a new political reality and new paths to international peace and cooperation.

The workshop was convened under the Chatham House Rule. This report presents a high-level summary of key insights and takeaways from the convening. The views expressed herein do not necessarily represent those of the meeting participants, The Harry Frank Guggenheim Foundation, or Carnegie Council.

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