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.

Photo: MENAHEM KAHANA/AFP via Getty Images

Photo: MENAHEM KAHANA/AFP via Getty Images

What to Know About the Israeli Strike on Iran

Israel’s military strikes on are likely to set back Iran’s nuclear program, but much of the program will remain. Tehran retaliation options are weaker than before the October 7, 2023 terrorist attacks on Israel. The instability may suck in the United States despite the Trump administration’s desire to remain uninvolved.

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Commentary by Daniel Byman — June 13, 2025

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Photo: Anna Moneymaker/Getty Images

Can Ukraine Survive Without U.S. Aid?

June 5, 2025 • 11:15 am – 11:45 pm EDT
Video On Demand
Hosted by Warfare, Irregular Threats, and Terrorism Program
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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
Riley McCabe

Riley McCabe

Associate Fellow, Warfare, Irregular Threats, and Terrorism Program

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What to Know About the Israeli Strike on Iran

Israel’s military strikes on are likely to set back Iran’s nuclear program, but much of the program will remain. Tehran retaliation options are weaker than before the October 7, 2023 terrorist attacks on Israel. The instability may suck in the United States despite the Trump administration’s desire to remain uninvolved.

Commentary by Daniel Byman — June 13, 2025

Can Ukraine Survive Without U.S. Aid?

Experts from CSIS’s Warfare, Irregular Threats, and Terrorism Program sat down for a discussion on the possible implications of a partial or complete suspension of U.S. military aid to Ukraine.

Event — June 5, 2025

Combating State Hostage Taking and Wrongful Detention

The CSIS Hostage Commission launches its findings on the rise of hostage-taking and wrongful detention. Join executive directors Jon Alterman and Jason Rezaian, along with key stakeholders, to discuss key recommendations and the path forward.

Event — June 4, 2025

Combating State Hostage Taking and Wrongful Detention

The CSIS Hostage Commission launches its findings on the rise of hostage-taking and wrongful detention. Join executive directors Jon Alterman and Jason Rezaian, along with key stakeholders, to discuss key recommendations and the path forward.

Transcript — June 4, 2025

Russia’s Battlefield Woes in Ukraine

Russia has performed poorly on the battlefield in Ukraine and will likely hit the 1 million casualty mark in the summer of 2025. New CSIS data details Russia's slow rate of advance, heavy losses of equipment, and significant casualties.

Brief by Seth G. Jones and Riley McCabe — June 3, 2025

The Role of Social Media in Cartel Recruitment

CSIS Americas Research Associate Rubi Bledsoe delves into the intricacies of digital recruitment tactics by Mexican cartels, the factors that make the youth vulnerable to them, and best avenues to combat them.

Commentary by Rubi Bledsoe — May 28, 2025