Transnational Threats
Led by the Warfare, Irregular Threats, and Terrorism 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.

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Aid Cuts Make Peace Negotiations in Ukraine Less Likely
Commentary by Riley McCabe — June 16, 2025

What to Know About the Israeli Strike on Iran
Commentary by Daniel Byman — June 13, 2025

Illicit Innovation: Latin America Is Not Prepared to Fight Criminal Drones
Commentary by Henry Ziemer — June 11, 2025

Combating State Hostage Taking and Wrongful Detention
Transcript — June 4, 2025
Past Events

One Million Casualties: Russia’s Losses on the Battlefield

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Can Ukraine Survive Without U.S. Aid?

Photo: CSIS
Combating State Hostage Taking and Wrongful Detention

Iranian Networks in the Middle East

Photo: CSIS
Report Launch: Firearms Trafficking in Latin America and the Caribbean

The Global Terrorism Landscape with the Acting Director of the National Counterterrorism Center

Photo: DIDIER LEBRUN/BELGA/AFP/Getty Images
When States Take Hostages: Responding to Iran and Other Perpetrators

Photo: AerialPerspective Images via Getty Images
What are the Impacts of GPS Jamming and Spoofing on Civilians?
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All Transnational Threats Content
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Dangerous Liaisons: Russian Cooperation with Iran in Syria
Brief by Seth G. Jones, Joseph S. Bermudez Jr., and Nicholas Harrington — July 16, 2019
The United States’ Soft War with Iran
Brief by Seth G. Jones and Danika Newlee — June 11, 2019
Case Studies in Iranian Expansion Across the Middle East: Imam Ali Training Facility, Iran
Commentary by Seth G. Jones, Joseph S. Bermudez Jr., and Nicholas Harrington — May 15, 2019
Case Studies in Iranian Expansion Across the Middle East: El Boqaa Training Facility, Lebanon
Commentary by Seth G. Jones, Joseph S. Bermudez Jr., and Nicholas Harrington — May 15, 2019
The Fight Against ISIS: A Conversation with Rukmini Callimachi
Event — April 5, 2019
Russian Meddling in the United States: The Historical Context of the Mueller Report
Brief by Seth G. Jones — March 27, 2019
Long Game or Long Gone?
Event — March 26, 2019
The New Zealand Attack and the Global Challenge of Far-Right Extremism
Commentary by Seth G. Jones — March 15, 2019
War by Proxy: Iran’s Growing Footprint in the Middle East
Brief by Seth G. Jones — March 11, 2019
From the IRA to the Islamic State: The Evolving Terrorism Threat in Europe
Report by Seth G. Jones, Maxwell B. Markusen, and Boris Toucas — December 19, 2018