Defense and Security
CSIS’s defense and security research is led by the Missile Defense Project; Project on Nuclear Issues; Defense-Industrial Initiatives Group; Aerospace Security Project; Warfare, Irregular Threats, and Terrorism Program; Burke Chair in Strategy; Smart Women, Smart Power; Defending Democratic Institutions Project; and Defense Budget Analysis.

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Trump Sends Weapons to Ukraine: By the Numbers
Critical Questions by Mark F. Cancian and Chris H. Park — July 15, 2025

How the United States Can Overcome Icebreaker Construction Woes and Grow the Maritime Industrial Base
Report by Luke Slivinski — July 15, 2025

High-Altitude Nuclear Explosions: Myths and Reality
Brief by Scott Pence and Adam F. Reynolds — July 14, 2025

Out-Adapting the Enemy: Why Mass Alone Won’t Win Tomorrow’s Wars
Commentary by Benjamin Jensen — July 11, 2025
Past Events

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China’s New London “Super Embassy”: Soft Power Hub or Security Risk?

Photo: CSIS
Denmark’s Role in European and Transatlantic Security

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The Impossible State Live Podcast: Special Conversation with Senator Andy Kim

Photo: CSIS
Iran-North Korea Cooperation | The Capital Cable #116

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U.S. Bombs Iran: What Comes Next?

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Strategic Landpower Dialogue: A Conversation with General Ronald Clark

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Looking Forward: The Future of United States-Japan-Korea Trilateral Relations
Related Programs

Defense and Security

Aerospace Security Project

Arleigh A. Burke Chair in Strategy

Civil-Military Relations

Cooperative Defense Project

Defending Democratic Institutions

Defense Budget Analysis

Defense-Industrial Initiatives Group

Defense 360

Gray Zone Project

Hidden Reach

Missile Defense Project

Project on Nuclear Issues

Risk and Foresight Group

Smart Women, Smart Power

Strategic Futures

Warfare, Irregular Threats, and Terrorism Program
Experts






All Defense and Security Content
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Under the Nuclear Shadow: A Virtual Book Talk with Dr. Fiona Cunningham
Event — July 21, 2025
Mesh Sensing for Air and Missile Defense
Event — July 21, 2025
Fortifying Deterrence through Logistics: A Conversation with DASD Patrick Kelleher and Maj. Gen. David Sanford
Event — July 16, 2025
Armenia, Azerbaijan, and Geopolitics in the South Caucasus
Podcast Episode by Max Bergmann and Maria Snegovaya — July 15, 2025

How the United States Can Overcome Icebreaker Construction Woes and Grow the Maritime Industrial Base
Report by Luke Slivinski — July 15, 2025
Trump Sends Weapons to Ukraine: By the Numbers
Critical Questions by Mark F. Cancian and Chris H. Park — July 15, 2025
High-Altitude Nuclear Explosions: Myths and Reality
Brief by Scott Pence and Adam F. Reynolds — July 14, 2025
Out-Adapting the Enemy: Why Mass Alone Won’t Win Tomorrow’s Wars
Commentary by Benjamin Jensen — July 11, 2025
Innovate or Die: The Army Transformation Initiative and the Future of Allied Land Warfare
Commentary by Maj. Gen. Matthew Van Wagenen, Col. Arnel P. David, and Benjamin Jensen — July 10, 2025
Impacts of the One Big Beautiful Bill Act on the Mining Sector
Critical Questions by Gracelin Baskaran and Meredith Schwartz — July 9, 2025