On this episode of Horns of Dilemma, Sheena Greitens moderated a panel discussion about the Russo-Ukrainian war and broader challenges to European security. The conversation featured Gen. Vince Brooks, U.S. Army ( Ret.), former Commander, United Nations Command/Combined Forces Command/United States Forces Korea; Susan Colbourn, associate director of the Program in American Grand Strategy, Sanford School of Public Policy at Duke University; Simon Miles, assistant professor, Sanford School of Public Policy, Duke University; and Mark Pomar, Senior National Security Fellow, Clements Center for National Security. The group discussed the challenges the Ukrainian military faces, the risks of nuclear escalation, and the longer-term implications of the war for regional and global security.