This path-breaking study examines the profound reconfiguration of the postwar liberal international order, driven by America's apparent retreat from global leadership, Europe's strategic dilemmas, and rising great power competition. Focusing on U.S. and European responses to challenges like the Trump administration's "America First" policies, the rise of Chinese power, Russian aggression, and the erosion of multilateral institutions Bluth analyses how security, trade, and political structures are adapting. This book argues that the global order is not simply collapsing or fragmenting, as some accounts have suggested, but undergoing a more complex process of contested continuity.