This book investigates how the military conflict between Russia and Ukraine has affected the religious situation in these countries. It considers threats to and violations of religious freedom, including those arising in annexed Crimea and in the eastern part of Ukraine, where fighting between Ukrainian government forces and separatist paramilitary groups backed and controlled by Russia is still going on, as well as in Russia and Ukraine more generally. It also assesses the impact of the conflict on church-state relations and national religion policy in each country and explores the role religion has played in the military conflict and the ideology surrounding it, focusing especially on the role of the Ukrainian and Russian Orthodox churches, as well as on the consequences for inter-church relations and dialogue.