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U.S. defense policy builds from the study of long-term strategic competition, technological advancement and the changing character of war, and twenty-first-century challenges to liberal democracy and national security. By assessing these issues areas alongside aspects such as global military balance, asymmetric warfare, and regional conflicts, CSIS’s defense strategy portfolio offers unparalleled insight into security challenges facing the United States.
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President Macron’s updated doctrine marks a watershed for European defense, with an increased French nuclear arsenal and a “forward deterrence” strategy that integrates regional conventional capabilities. It aims to provide the operational means for strategic autonomy.
Commentary by Astrid Chevreuil — March 4, 2026
Transcript — March 2, 2026
Brief by Seth G. Jones and Riley McCabe — January 27, 2026
Report by Doreen Horschig — December 18, 2025
Photo: CSIS
Photo: John Moore/Getty Images
Photo: Win McNamee/Getty Images
Photo: NIKLAS HALLE'N/AFP via Getty Images
Join the Wadhwani AI Center for a discussion on how Ukraine’s military has adapted across three interconnected fronts: air defense, training, and tech development.
Event — April 3, 2026
All About the Base host and Center for the Industrial Base Director Jerry McGinn speaks with Tom Karako, Director of the Missile Defense Project, on the state of U.S. munitions stockpiles in light of the strikes against Iran and the need for magazine "breadth" and not simply depth.
Event — March 10, 2026
President Macron’s updated doctrine marks a watershed for European defense, with an increased French nuclear arsenal and a “forward deterrence” strategy that integrates regional conventional capabilities. It aims to provide the operational means for strategic autonomy.
Commentary by Astrid Chevreuil — March 4, 2026
All About the Base Host Jerry McGinn speaks with Byron Callan of Capital Alpha Partners about private capital investment and government equity stakes in key defense suppliers.
Event — March 2, 2026
CSIS experts share analysis on U.S. and Israel's strikes on Iran.
Event — March 2, 2026
CSIS experts discussed the U.S. and Israeli joint strikes against Iran, Iran’s retaliation, and what comes next for the region.
Transcript — March 2, 2026
The Trump administration recently released the 2026 National Defense Strategy, outlining defense priorities for the next four years. What are the key implications of the NDS for Asia?
Event — February 5, 2026
Please join the CSIS Defense and Security Department for a conversation on the expiration of the New START Treaty.
Event — February 3, 2026
Despite claims of success in Ukraine, new CSIS data shows that Russia is paying an extraordinary price for minimal gains.
Event — January 30, 2026
A short, spoken-word summary from CSIS’s Seth G. Jones and Riley McCabe on their brief, “Russian’s Grinding War in Ukraine.”
Podcast Episode by Seth G. Jones and Riley McCabe — January 30, 2026
