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: Wisam Hashlamoun/Anadolu via Getty Images

Photo: Wisam Hashlamoun/Anadolu via Getty Images

The Depleting Missile Defense Interceptor Inventory

The proliferation of missile threats has made air and missile defense interceptors the table stakes for entry into future conflicts, forcing the Department of Defense to either ante up and buy the necessary interceptors, or fold on its regional interests and bear the consequences.

Brief by Wes Rumbaugh — December 5, 2025

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Seth G. Jones

Seth G. Jones

President, Defense and Security Department; Harold Brown Chair
Emily Harding

Emily Harding

Vice President, Defense and Security Department; Director, Intelligence, National Security, and Technology Program
Daniel Byman

Daniel Byman

Director, Warfare, Irregular Threats, and Terrorism Program
Tom Karako

Tom Karako

Director, Missile Defense Project and Senior Fellow, Defense and Security Department
Jerry McGinn

Jerry McGinn

Director, Center for the Industrial Base and Senior Fellow, Defense and Security Department
Kari Bingen

Kari A. Bingen

Director, Aerospace Security Project and Senior Fellow, Defense and Security Department
Clayton Swope

Clayton Swope

Deputy Director, Aerospace Security Project and Senior Fellow, Defense and Security Department
Lauryn Williams

Lauryn Williams

Deputy Director and Senior Fellow, Strategic Technologies Program
Bonny Lin

Bonny Lin

Director, China Power Project and Senior Adviser
Max Bergmann

Max Bergmann

Director, Europe, Russia, and Eurasia Program and Stuart Center
Matt Pearl

Matt Pearl

Director, Strategic Technologies Program
Benjamin Jensen

Benjamin Jensen

Director, Futures Lab and Senior Fellow, Defense and Security Department
Oge Onubogu

Oge Onubogu

Director and Senior Fellow, Africa Program
Yasir Atalan

Yasir Atalan

Deputy Director and Data Fellow, Futures Lab, Defense and Security Department
Brian Hart

Brian Hart

Deputy Director and Fellow, China Power Project
Andy Lim

Andy Lim

Deputy Director and Fellow, Korea Chair
Joseph Rodgers

Joseph Rodgers

Deputy Director and Fellow, Project on Nuclear Issues
Joel Coito

Joel Coito

Military Fellow, Defense and Security Department

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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 Depleting Missile Defense Interceptor Inventory

The proliferation of missile threats has made air and missile defense interceptors the table stakes for entry into future conflicts, forcing the Department of Defense to either ante up and buy the necessary interceptors, or fold on its regional interests and bear the consequences.

Brief by Wes Rumbaugh — December 5, 2025

ROK-U.S. Strategic Forum 2025

Please join us for the 10th annual ROK-U.S. Strategic Forum, our premier international forum that brings together officials, policymakers, and experts to discuss issues important to the U.S.-ROK alliance.

Event — December 3, 2025

The Last Line of Defense

Are the United States and Venezuela on the Brink of War?

Seth Jones sits down with Juan Cruz, who served in the U.S. Intelligence Community and on the National Security Council as special assistant to the president and senior director for Western Hemisphere affairs, to discuss the U.S. military’s role in the Venezuela crisis and provide an inside look at Maduro’s armed forces.

Podcast Episode by Seth G. Jones and Juan Cruz — December 3, 2025

The Last Line of Defence