This open access book examines the implications for the EU of a radically changed international context characterized by systemic rivalry, competition over norms and regulations, and growing strategic tension. Globalization that once tied national economies together and internationalized social phenomena, such as education, research and innovation, and tourism, has gone in reverse. An opposite trend is driving the world into distinct spheres of competing models of governance, regulation, technological development, and communication. Facing the most extensive rupture of economic and inter-state relations since the onset of the Cold War, the management of the EU’s internal and external borders is taking on a completely new meaning. The open access book brings together scholars from economics, law, and political science to provide up dated assessments and policy advice on the insecurity in the neighborhood and war in Ukraine, the EU’s role in the future European security architecture,weaponized energy dependence, and the global competition on norms.