Since the end of the Cold War, there has been a wealth of discussion and controversy about the idea of a 'postnational' or 'cosmopolitan' politics. But while there are many normative theories of cosmopolitanism, as well as some cosmopolitan theories of globalization, there has been little attempt to grapple systematically with fundamental questions of structure and action from a 'cosmopolitan point of view.' Drawing on Kant's cosmopolitan writings and Habermas's critical theory of society, Brian