This volume examines how security contributes to the emergence of new forms of politics and to the formation, differentiation and transformation of political entities. Its chapters analyze the historical dynamics of securitization and politicization, combining historical and social science perspectives. The subjects studied include scenarios of political foundation, the emergence and transformation of statehood, the transformation of interstate alliances, transnational networks and international organizations, as well as processes in the separation of religion and politics as social spheres. With contributions by Maria Ketzmerick | Jochen Kleinschmidt | Andreas Langenohl | Philipp Lottholz | Andrew Neal | Stephan Stetter | Erik Swart | Felix Weiß | Cornel Zwierlein