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: U.S. Navy photo/U.S. Central Command
Iran War Cost Estimate Update: $11.3 Billion at Day 6, $16.5 Billion at Day 12
Commentary by Mark F. Cancian and Chris H. Park — March 13, 2026
How to Lose a Navy in 10 Days
Commentary by Benjamin Jensen — March 12, 2026
The Wars After the War: Why Israel and Iran May Keep Fighting
Commentary by Daniel Byman — March 11, 2026
Unpacking Iran’s Drone Campaign in the Gulf: Early Lessons for Future Drone Warfare
Commentary by Kateryna Bondar — March 10, 2026
Past Events
Taiwanese Views of the United States and China: Evidence from the 2026 American Portrait Survey
Is the U.S. Running Out of Munitions? | All About the Base
Photo: CSIS
Epic Fury: The Campaign Against Iran’s Missile & Nuclear Infrastructure
Photo: CSIS
Would Regime Change Solve the Iran Challenge? | State of Play
Photo: CSIS
North Korea's Ninth Party Congress: What Happened? | The Capital Cable #130
Photo: CSIS
U.S. and Israel Strike Iran - What Comes Next?
Photo: CSIS
Big Deals to Spur Production | All About the Base
Photo: CSIS
Four Years of the War in Ukraine
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
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Iran War Cost Estimate Update: $11.3 Billion at Day 6, $16.5 Billion at Day 12
Commentary by Mark F. Cancian and Chris H. Park — March 13, 2026
How to Lose a Navy in 10 Days
Commentary by Benjamin Jensen — March 12, 2026
Taiwanese Views of the United States and China: Evidence from the 2026 American Portrait Survey
Event — March 11, 2026
The Wars After the War: Why Israel and Iran May Keep Fighting
Commentary by Daniel Byman — March 11, 2026
Is the U.S. Running Out of Munitions? | All About the Base
Event — March 10, 2026
Unpacking Iran’s Drone Campaign in the Gulf: Early Lessons for Future Drone Warfare
Commentary by Kateryna Bondar — March 10, 2026
What Does the New Cyber Strategy Really Mean?
Critical Questions by Emily Harding — March 9, 2026
Epic Fury: The Campaign Against Iran’s Missile & Nuclear Infrastructure
Event — March 5, 2026
$3.7 Billion: Estimated Cost of Epic Fury’s First 100 Hours
Commentary by Mark F. Cancian and Chris H. Park — March 5, 2026
Eric Ciaramella on How Europe Can Arm Ukraine
Podcast Episode by Max Bergmann, Maria Snegovaya, and Eric Ciaramella — March 5, 2026