Transnational Threats

Led by the Warfare, Irregular Threats, and Terrorism Program, the International Security Program, Defending Democratic Institutions, and the Arleigh A. Burke Chair in Strategy, CSIS provides strategic thinking on the range of efforts to counter terrorist groups and their methods across the world.

Photo: Majid Saeedi/Getty Images

Photo: Majid Saeedi/Getty Images

Why Iran Will Escalate

Iran has limited options to respond to the killing of Hamas political leader Ismail Haniyeh, making escalation likely, even if Tehran prefers a return to the status quo.

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Commentary by Alexander Palmer — August 8, 2024

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Seth G. Jones

Seth G. Jones

Senior Vice President; Harold Brown Chair; and Director, International Security Program
Daniel Byman

Daniel Byman

Senior Fellow, Warfare, Irregular Threats, and Terrorism Program
Catrina Doxsee

Catrina Doxsee

Fellow, Warfare, Irregular Threats, and Terrorism Program

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Russia's Gamble in Ukraine

Moscow has prepared a growing number of army, navy, and air force units for a possible invasion of Ukraine while also increasing irregular activities like cyber operations and subversion. If peace talks fail, escalation may include measures that are global in nature.

Brief by Seth G. Jones, Joseph S. Bermudez Jr., and Philip G. Wasielewski — January 27, 2022

Russia’s Possible Invasion of Ukraine

If peace talks fail, the Russian military has several options to invade Ukraine through northern, central, and southern routes, raising critical questions for the United States and its NATO allies according to analysis by the CSIS International Security Program.

Brief by Seth G. Jones and Philip G. Wasielewski — January 13, 2022

The Iranian and Houthi War against Saudi Arabia

Aided by Iran, the Houthi movement in Yemen is waging an intensifying campaign against civilian infrastructure targets in Saudi Arabia using cruise missiles, ballistic missiles, and explosive-laden drones, according to a new brief by the Transnational Threats Project.

Brief by Seth G. Jones, Jared Thompson, Danielle Ngo, Joseph S. Bermudez Jr., and Brian McSorley — December 21, 2021

Moscow’s Continuing Ukrainian Buildup

Russia is continuing to surge military equipment and personnel near its border with Ukraine, and recent satellite imagery reveals increased activity from Russia's 144th Guards Motorized Rifle Division and the 41st Combined Arms Army.

Commentary by Seth G. Jones, Joseph S. Bermudez Jr., and Michelle Macander — November 17, 2021

Restoring Momentum to U.S. Foreign Policy in the Wake of Afghanistan

CSIS senior adviser Norman T. Roule analyzes the broader implications of the U.S. withdrawal from Afghanistan and offers recommendations for protecting U.S. credibility and security while rebuilding bipartisanship in U.S. foreign policymaking.

Report by Norman T. Roule — September 13, 2021

The First U.S. National Strategy for Countering Domestic Terrorism

On June 15, 2021, the Biden administration released the first-ever National Strategy for Countering Domestic Terrorism. CSIS breaks down the context and components of this strategy and assesses its implications for the future of U.S. counterterrorism efforts.

Critical Questions by Catrina Doxsee and Jake Harrington — June 17, 2021