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CSIS explores the nexus between defense technologies and emerging challenges to combat effectiveness in the twenty-first century, with analysis led by the Strategic Technologies Program.

Photo: Anna Moneymaker/Getty Images

Photo: Anna Moneymaker/Getty Images

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

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Seth G. Jones

Seth G. Jones

President, Defense and Security Department; Harold Brown Chair
Tom Karako

Tom Karako

Director, Missile Defense Project and Senior Fellow, Defense and Security Department
Benjamin Jensen

Benjamin Jensen

Director, Futures Lab, and Senior Fellow, Defense and Security Department
Cynthia Cook

Cynthia R. Cook

Director, Defense-Industrial Initiatives Group and Senior Fellow, Defense and Security Department

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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

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

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

Can Ukraine Fight Without U.S. Aid? Seven Questions to Ask

A complete cutoff of U.S. aid would significantly harm Ukraine’s ability to fight Russia but would not necessarily lead to immediate defeat—and more limited cutoffs would have more limited effects on Ukraine’s battlefield performance.

Report by Iselin Brady, Daniel Byman, Riley McCabe, and Alexander Palmer — May 19, 2025