Nuclear Issues

Though nuclear weapons have not been used since 1945, their threat is omnipresent when nuclear powers join the battlefield. CSIS scholars analyze key nuclear policy issues including deterrence, escalation, and arms control.

Photo: U.S. Air Force Photo/Senior Airman Sergio A. Gamboa

On the Horizon, Vol. 8

The 2025 PONI Nuclear Scholars explore the future of nuclear strategy, offering perspectives from emerging experts on disruptive technology, intensifying geopolitical rivalries, and strategic stability.

Report by Doreen Horschig — December 18, 2025

Project Atom 2025: Escalation Management in Acute and Protracted Conflicts in the Indo-Pacific

Report by Heather Williams, Lachlan MacKenzie, Elena Tiedens, Mike Albertson, Matthew R. Costlow, Adam Mount, Kori Schake, and Rebecca Shrimpton — December 3, 2025

Photo: EVGENIA NOVOZHENINA/POOL/AFP via Getty Images

Golden Dome for America: Assessing Chinese and Russian Reactions

Commentary by Raymond Wang and Lachlan MacKenzie — November 20, 2025

Golden Dome and Strategic Stability

Transcript — November 19, 2025

See all analysis on Nuclear Issues

Past Events

The New National Security Strategy: Strengths, Shortfalls, and Shockwaves

December 10, 2025 • 3:00 – 4:00 pm EST

Hosted by HTK Series

Report Launch: Project Atom 2025

December 10, 2025 • 9:00 am – 12:15 pm EST

Hosted by Project on Nuclear Issues

A Return to Nuclear Testing: Subcritical, Supercritical, or Weapons Test?

November 20, 2025 • 1:00 – 1:30 pm EST

Hosted by Project on Nuclear Issues

Golden Dome and Strategic Stability

November 19, 2025 • 9:00 – 10:00 am EST

Hosted by HTK Series

The Impossible State Live Podcast: South Korea’s Nuclear Submarine Deal: What’s Next?

November 12, 2025 • 11:00 – 11:45 am EST

Hosted by Korea Chair

A House of Dynamite: Fact, Fiction, and U.S. Homeland Defense

November 4, 2025 • 4:00 – 5:00 pm EST

Hosted by HTK Series

Photo: SSG Seth LaCount/DVIDS — Photo: Seth LaCount/DVIDS

Should the United States Extend New START Limits?

October 10, 2025 • 1:00 – 2:00 pm EDT

Hosted by HTK Series

China's Military on Parade

September 4, 2025 • 9:00 – 9:45 am EDT

Hosted by HTK Series

See all events on Nuclear Issues

Related Programs

Defense and Security

Project on Nuclear Issues

Experts

Heather Williams

Director, Project on Nuclear Issues and Senior Fellow, Defense and Security Department

Victor Cha

President, Geopolitics and Foreign Policy Department and Korea Chair

Joseph Rodgers

Deputy Director and Fellow, Project on Nuclear Issues

Astrid Chevreuil

Visiting Fellow, Europe, Russia, and Eurasia Program

Katrina Schweiker

Military Fellow, Defense and Security Department

All Nuclear Issues Content

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The Arsenal of Freedom Tour

Please join the CSIS Defense and Security Department for a conversation on the Secretary of War’s Arsenal of Freedom tour.

Event — January 22, 2026

On the Horizon, Vol. 8

Report by Doreen Horschig — December 18, 2025

The New National Security Strategy: Strengths, Shortfalls, and Shockwaves

Please join the CSIS Defense and Security Department for a conversation on the recently released National Security Strategy.

Event — December 10, 2025

Report Launch: Project Atom 2025

Please join the Project on Nuclear Issues for a launch event for the Project Atom 2025 report on escalatory risk in the Indo-Pacific.

Event — December 10, 2025

The Impossible State

Is North Korean Denuclearization Dead?

On this episode, Dr. Victor Cha moderates a discussion with Amb. Cho Byung Jae and Dr. Jun Bong-geun on North Korea’s nuclear program and the future of diplomacy. The episode explores Pyongyang’s constitutional embrace of nuclear weapons, Seoul’s E.N.D. initiative to revive dialogue, and President Trump’s push for summitry.

Podcast Episode by Victor Cha — December 9, 2025