Transnational Threats

The threat from regional terrorist groups and domestic extremist individuals is omnipresent. CSIS provides strategic thinking on the range of efforts to counter terrorist groups and their methods across the world.

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Seth G. Jones

Seth G. Jones

President, Defense and Security Department; Harold Brown Chair
Daniel Byman

Daniel Byman

Director, Warfare, Irregular Threats, and Terrorism Program

Nikita Shah

Senior Fellow, Intelligence, National Security, and Technology Program
Riley McCabe

Riley McCabe

Associate Fellow, Warfare, Irregular Threats, and Terrorism Program

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The Postwar Threat to Gulf Energy Infrastructure

As Gulf states build new pipelines to reduce Iran’s leverage over the Strait of Hormuz, Tehran is likely to adapt. Pipelines offer greater resilience, but remain vulnerable to Iranian missiles, drones, sabotage, and other attacks on critical energy infrastructure.

Report by Daniel Byman and Alden Ness — October 6, 2026

Understanding Russia-Iran Collaboration in Cyberspace

Cyber collaboration between Russia and Iran in the U.S.-Iran conflict has been overstated based on currently cited evidence. While cross-border cyber cooperation is happening in some areas, the Russia-Iran cyber reality is much thornier and much trickier to interpret than some headlines suggest.

Commentary by Nikita Shah and Justin Sherman — July 14, 2026

Artificial Intelligence and the Future of Terrorism

AI will not transform terrorism overnight. Its more likely effect is subtler: lowering barriers for extremist propaganda, recruitment, disinformation, and planning while strengthening counterterrorism tools and surveillance risks.

Brief by Daniel Byman and V.S. Subrahmanian — July 10, 2026