Ukraine War

Russia’s full-scale invasion of Ukraine is one of the defining conflicts of the twenty-first century, impacting everything from allied security architectures to global energy and food supply chains to the U.S. defense industry. CSIS produces leading research on the war in Ukraine and how it impacts European and U.S. security. 

Photo: IVAN SAMOILOV/AFP via Getty Images

Photo: IVAN SAMOILOV/AFP via Getty Images

Demining Ukraine: Outcomes from the 2025 Ukraine Mine Action Conference

The CSIS Global Food and Water Security Program welcomed Ambassador of Ukraine to the United States Olga Stefanishyna and a panel of experts to discuss facilitating expedient, safe demining procedures at scale for Ukraine’s agricultural recovery.

Transcript — October 28, 2025

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Featured Analysis

Photo: Wojciech Grzedzinski/Anadolu via Getty Images

Photo: Wojciech Grzedzinski/Anadolu via Getty Images

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.

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

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Spotlight On:  Drone Warfare

The Russia-Ukraine Drone War: Innovation on the Frontlines and Beyond

Video — May 28, 2025

Past Events

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Experts

Seth G. Jones

Seth G. Jones

President, Defense and Security Department; Harold Brown Chair
Max Bergmann

Max Bergmann

Director, Europe, Russia, and Eurasia Program and Stuart Center
Daniel Byman

Daniel Byman

Director, Warfare, Irregular Threats, and Terrorism Program
Emily Harding

Emily Harding

Vice President, Defense and Security Department; Director, Intelligence, National Security, and Technology Program
Benjamin Jensen

Benjamin Jensen

Director, Futures Lab and Senior Fellow, Defense and Security Department
Jerry McGinn

Jerry McGinn

Director, Center for the Industrial Base and Senior Fellow, Defense and Security Department

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Will the Tomahawks Save Ukraine?

About a thousand Tomahawk missiles in the U.S. stockpile today are available for transfer to Ukraine. They could have a major impact on the war, but the Pacific theater needs and Russian opposition could disrupt any deal.

Critical Questions by Mark F. Cancian and Chris H. Park — October 17, 2025

What Could a Trump Peace Plan in Ukraine Look Like?

As Trump’s team pushes for a Ukraine peace deal amid new pressure on Russia, experts and AI models outline the most likely outcomes, from frozen frontlines to the economic and security terms shaping negotiations.

Critical Questions by Benjamin Jensen and Yasir Atalan — October 17, 2025

How and Why Ukraine’s Military Is Going Digital

Ukraine survived invasion by improvising its defense innovation ecosystem, but long-term resilience depends on balancing agility in adopting new tech with centralization to scale. Kateryna Bondar shows how digitization is key to bridging the two.

Report by Kateryna Bondar — October 6, 2025

Russia’s War in Ukraine: The Next Chapter

Russia’s war in Ukraine has persisted for over three years. Despite U.S. mediation attempts, from Saudi talks to a Trump-Putin summit in Anchorage, and European debates on peacekeepers, Russia continues to pummel Ukraine’s cities and engage in a brutal ground offensive.

Brief by Max Bergmann and Maria Snegovaya — September 30, 2025

Operational Art in the Age of Battle Networks

From Ukraine to the Middle East, a new age of warfare is dawning. Information-centric battle networks are rewriting the rules, prioritizing cognitive shock and decisionmaking speed over traditional military mass. How will modern militaries adapt and survive?

Commentary by Benjamin Jensen — September 16, 2025

Will, Cohesion, Resilience, and the Wars of the Future

In both Ukraine and Israel, the story of resilience is not only about battlefield endurance but also the mobilization of society—military, civilian, technological, and psychological—to resist aggression and maintain national cohesion.

Commentary by Daniel Byman — September 16, 2025

Adversaries and the Future of Competition

China, Russia, Iran, and North Korea have increased security cooperation in arms sales, military exercises, and the industrial base, though there are limits. Bilateral cooperation is likely to increase in the future, which has major implications for the future of warfare.

Commentary by Seth G. Jones — September 16, 2025