Defense and Security
Amid a rapid shift in the global balance of power, CSIS offers practical solutions to the hardest national security strategy questions. CSIS’s defense and security research covers issues including traditional missile defense, nuclear weapons, aerospace security, irregular threats, democratic institutions, and the use of AI and critical minerals in defense technologies.
Photo: BRENDAN SMIALOWSKI/AFP via Getty Images
MBS in Washington: What’s Next for U.S.–Saudi Relations?
Transcript — November 6, 2025
Russia’s Latest Nuclear Saber-Rattling: Nuclear Testing?
Critical Questions by Heather Williams and Lachlan MacKenzie — November 5, 2025
What to Expect from Secretary Hegseth’s November 7 Speech on the Arsenal of Freedom
Commentary by Jerry McGinn — November 5, 2025
Leveraging Latin America’s Embrace of the United States
Commentary by Evan Ellis — November 4, 2025
Past Events
Photo: Andrew Harnik/Getty Images
Trump's Deals in Asia: China, Korea, Japan | The Capital Cable #124
Photo: BRENDAN SMIALOWSKI/AFP via Getty Images
MBS in Washington: What’s Next for U.S.–Saudi Relations?
Photo: MAHESH KUMAR A./POOL/AFP via Getty Images
Rep. Adam Smith on Engaging China
Photo: ROMAN PILIPEY/AFP/Getty Images
Russian and Ukrainian Battlefield Adaptations
Photo: PO1 Dominique Pineiro/DVIDS
A House of Dynamite: Fact, Fiction, and U.S. Homeland Defense
Photo: CSIS
Book Launch: Choosing Defeat: The Twenty-Year Saga of How America Lost Afghanistan
Photo: JADE GAO/AFP/Getty Images
Photo: CSIS
Caribbean Buildup: A Renewed Focus on Counternarcotics and Hemispheric Security?
Related Programs
Defense and Security
Aerospace Security Project
Arleigh A. Burke Chair in Strategy
Center for the Industrial Base
Civil-Military Relations
Cooperative Defense Project
Defending Democratic Institutions
Defense Budget Analysis
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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Report Launch: Project Atom 2025
Event — December 10, 2025
Delivering Space Capabilities for Warfighting Advantage
Event — November 20, 2025
Trump's Deals in Asia: China, Korea, Japan | The Capital Cable #124
Event — November 6, 2025
MBS in Washington: What’s Next for U.S.–Saudi Relations?
Event — November 6, 2025
Rep. Adam Smith on Engaging China
Event — November 6, 2025
MBS in Washington: What’s Next for U.S.–Saudi Relations?
Transcript — November 6, 2025
Russian and Ukrainian Battlefield Adaptations
Event — November 5, 2025
Russia’s Latest Nuclear Saber-Rattling: Nuclear Testing?
Critical Questions by Heather Williams and Lachlan MacKenzie — November 5, 2025
What to Expect from Secretary Hegseth’s November 7 Speech on the Arsenal of Freedom
Commentary by Jerry McGinn — November 5, 2025