Christian nationalism is primarily a U.S.-American phenomenon that at the same time has a global impact. Internationally, numerous parallel developments can be observed, including those in Germany. Of particular importance is the observation that within highly conservative and fundamentalist groups, theological convictions and narratives have emerged that render Christian communities susceptible to right-wing and far-right political ideologies. The contributors focus on especially influential evangelical and charismatic movements in the United States and demonstrate that there is no uniform ideology of Christian nationalism. Neocalvinist and fundamentalist groups have for some time developed theological convictions that lead them to adopt a critical stance toward liberal and pluralistic society and to aspire to a form of state grounded in Christian principles. In recent years, neo-charismatic networks have additionally gained influence; these pursue authoritarian ideals and openly seek political power. Both their understanding of God and of the human being, as well as certain social-ethical concepts, are shaped by dualistic patterns of thought and by authoritarian ideals. The contributors to this volume examine which theological convictions within specific movements contribute to their endorsement of authoritarian politics, both domestically and internationally. They raise the question of the extent to which these groups and their networks already exert influence within the German-speaking world. This development calls for intensive theological engagement in Germany as well.