Are We Running Out of Missile Defense Interceptors?
On December 17, 2025, the CSIS Missile Defense Project is pleased to roll out its new brief, The Depleting Missile Defense Interceptor Inventory.
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The New National Security Strategy: Strengths, Shortfalls, and Shockwaves
On December 10, 2025, CSIS Defense and Security Department experts weighed in on the recently released National Security Strategy.
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.
Golden Dome: Loosen the gag order, and start talking
The Trump administration’s Golden Dome initiative is both strategically necessary and long overdue. It is also already in jeopardy of failure. The reason? A lack of dialogue and persuasion. If the Pentagon does not start explaining Golden Dome, it will never be built.
A House of Dynamite: Fact, Fiction, and U.S. Homeland Defense
On November 4, 2025, CSIS Defense and Security Department experts broke down Netflix's "A House of Dynamite," exploring lessons learned, what it gets right and wrong, and how it can inform conversations about national security.
Should the United States Extend New START Limits?
On October 10, 2025, CSIS Defense and Security Department experts discussed Russian President Vladimir Putin's offer to abide by New START limitations for another year after the treaty expires in February 2026.
A Marie Kondo Moment for MTCR: Tidying Up the U.S. Approach to Missile Proliferation
New guidance for implementing the Missile Technology Control Regime will make it moderately easier for the United States to sell UASs to allies. But more fundamental reform is still needed to adapt the nonproliferation regime to today’s strategic environment.
Weather Research and Missile Defense: Save for a Rainy Day
Missile defense modernization depends on more than hardware. Civilian weather agencies like NOAA and NASA play a quiet but critical role.
Protecting America’s Spectrum: A Fireside Chat with Senator Maria Cantwell (D-WA)
On June 12, 2025, the CSIS Missile Defense Project hosted a fireside chat with Senator Maria Cantwell (D-WA), Ranking Member of the Senate Committee on Commerce, Science and Transportation, on why protecting America's electromagnetic spectrum is critical to U.S. national security. The discussion examined spectrum challenges across defense, critical infrastructure, and emerging technologies that underpin our national security.
Why Auctioning Military S-Band Spectrum Is a Bad Idea
Auctioning the low-3 S-band spectrum for commercial 5G use poses serious national security risks, potentially interfering with military radar and missile defense systems. Given escalating air and missile threats, the U.S. should maintain exclusive military access to this spectrum while continuing to study long-term sharing options.