This book explores Kant's cosmopolitanism and the normative requirements consistent with a Kantian based cosmopolitan constitution. It explores and defends such topics as cosmopolitan law, cosmopolitan right, the laws of hospitality, a Kantian federation of states, a cosmopolitan epistemology of culture, and a possible normative basis for a Kantian form of global distributive justice. Contrary to many contemporary interpretations, Brown positions Kant's cosmopolitan thought as a form of international constitutional jurisprudence requiring minimal legal demands against the extreme condition of establishing a world state. Viewing Kant's cosmopolitan theory as a minimal form of global jurisprudence allows it to satisfy communitarian, realist, and pluralist concerns without surrendering cosmopolitan principles of human worth and cosmopolitan law. In this regard, it provides a more comprehensive understanding of Kantian cosmopolitanism and the normative implications of this vision on contemporary international political theory.