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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Photo: Anna Moneymaker/Getty Images

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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Experts

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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Israel and Iran At War: What Comes Next? 

CSIS experts Daniel Byman and Doreen Horschig join Mona Yacoubian to discuss current developments in the Iran-Israel conflict, moderated by Will Todman.

Event — June 17, 2025

Aid Cuts Make Peace Negotiations in Ukraine Less Likely

Cutting U.S. aid to Ukraine now would not hasten peace. It would encourage the Kremlin to believe what it has long hoped for—that U.S. resolve is fleeting, and that time is on Russia’s side.

Commentary by Riley McCabe — June 16, 2025

What to Know About the Israeli Strike on Iran

Israel’s military strikes are likely to set back Iran’s nuclear program, but much of the program will remain. Tehran's 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