This chapter critiques the foundational assumption in security studies about a strict distinction between internal and external uses of force that set the parameters for organizing the state’s instruments of violence between police and military forces. It shows how the claims about a blurring process between domestic and international security is grounded on the assumed overlapped boundaries of territory, community, and political authority. By problematizing the ontological status of borders, political authority, and community, the chapter sets the stage for analyzing how these categories serve to legitimizing particular forms of force deployment.