This chapter defends the case for a global extension of democracy by deploying a cosmopolitan argument. As a response to the current international political fragmentation, which generates political exclusion, the alternative political project offered here envisages a cosmo-federal system. In this, all world citizens are included within a scheme of direct representative participation under a federal authority that governs the process of democratising world affairs. The pursuit of the democratic ideal in terms of scope is thus implemented in this proposal through a reworked notion of citizenship as global, multilayered and all-inclusive. In essence, this entails an expansion of the domestic model of democracy to the international le...