In Depth Analysis, Commentary, and Publications
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...
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.
Today’s global threat landscape is accompanied by the advent of a new missile age, one defined by a surge in the global supply and demand for a broad and diverse spectrum of strike capabilities as well as the means to counter them.
On September 24, 2025, CSIS Defense and Security Department experts discussed recent reform to the Missile Technology Control Regime (MTCR) and their implications for strategic competition.
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.
The United States faces one of the most dangerous international security environments in recent history. While some aspects of warfare remain perennial, the conflicts in Ukraine and the Middle East are showing how others are rapidly evolving on the modern battlefield.
Artillery has long been known as the “king of battle,” and for good reason. The future of warfare will likely be characterized by an increased demand signal for offensive and defensive fires.
On September 3, 2025, CSIS Defense and Security Department experts unpacked the strategic implications of the Chinese capabilities showcased during their victory day parade.
On August 12, 2025, the CSIS Defense and Security Department hosted a conversation on a conversation on space-based nuclear threats and the future of space security.
On July 30, 2025, the CSIS Defense and Security Department hosted a conversation on developments in U.S.-UK strategic cooperation.
