This insightful and timely book considers the role of great-power competition in what has come to be known as gray zone conflict. Based on cutting-edge empirical research, it addresses the question: how can interactions between adversaries in international crises be managed in ways which avoid dangerous escalation? Drawing together diverse perspectives, an interdisciplinary team of academics and policy analysts take a data-driven approach to analyzing international crises over the past 100 years. Taking the 2022 Russian invasion of Ukraine as a backdrop for critical evaluation, chapters examine US and NATO approaches to the management of escalation in asymmetric conflicts. Ultimately, the book identifies areas where classical deterrence theory is incompatible with the realities of the contemporary conflict environment, and proposes innovative tools for managing crises in the future. Providing historical overviews of escalation management in international crises, this comprehensive book is essential reading for students and scholars of international politics, international relations, terrorism and security, and foreign policy, particularly those studying Chinese, Russian and US strategic decision making. It will also be beneficial to policy analysts, military leaders, and journalists focusing on contemporary international issues.