In this piece we introduce and contextualize the contributions to the special focus on the international theory of Carl Schmitt, and argue that Carl Schmitt's much neglected international thought can provide scholars of both international relations and international law with a new common multidisciplinary research platform pivotal in thinking about the present international predicaments of crisis in international order and legitimacy, of contested liberal hegemony, and of the issue of unipolarity and the emergence of new forms of warfare, such as terrorism and the ‘global war on terror’.