Can states become committed and competent agents of cosmopolitan justice? The theory of ‘statist cosmopolitanism’ argues that they can: their citizens can be turned towards a commitment to cosmopolitan principles and actions by moral entrepreneurs constituting a ‘cosmopolitan avant-garde’, and can be sustained in their commitment to those principles by their pre-existing attachment to the state as a political community. Taking cosmopolitan principles as axiomatic, this paper subjects statist cosmopolitanism to critique. First, I question the scale of the transformation that a cosmopolitan avant-garde can engender given the complexity of the causal chains the avant-garde seek to elucidate, as well as the countervailing potency of the state i...