Analysis


In Depth Analysis, Commentary, and Publications

203 items, Page 1 of 21

New START Expiration

On February 3, 2026, CSIS Defense and Security Department experts examined New START’s expiration, how U.S. and Russian nuclear arsenals will evolve, and what the implications are for U.S. and global security.

The Arsenal of Freedom Tour

On January 22, 2026, CSIS Defense and Security Department experts discussed the Secretary of War’s Arsenal of Freedom tour, intended to bolster the defense industrial base and accelerate defense-related production.

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.

Countermeasures, Penetration Aids, and Missile Defense

In discussions on missile defense, the matter of countermeasures—decoy warheads and other deceptive missile payloads—is often invoked but insufficiently explored. For decades, popular commentators assumed that adversaries could readily develop countermeasures capable of defeating U.S. missile defense systems. With Russia and China having deployed missile defense countermeasures in their nuclear arsenals, it was assumed that...