Hybrid Practices of Diplomacy and Warfare (DIPLOWAR) was a transdisciplinary research project that aimed to shed light on the changing relationship between diplomacy and war. An important analytical move of the project was to understand diplomacy and war not primarily as political or legal relations between states, but as structuring principles of peaceful and violent political practices. This reconceptualization made it possible to bring together insights from research on the “new diplomacy” and research on the “new wars”, two literatures that have not yet been systematically linked to each other. DIPLOWAR sought to sharpen our analytical vocabulary and deepen our empirical understanding of the changing relationship between violent and nonviolent political practices to help scholars, practitioners, and the public better to grasp the new realities of war and peace. During the first year of the project, the researcher was hosted by the Arnold A. Saltzman Institute for War and Peace Studies at Columbia University, New York; during the second year he was based at the Research Center “Normative Orders” at Goethe University Frankfurt.