What should we do with the ideals of internationalism, the withering away of state and horizontality? Probably start by thinking seriously about them. That is to say, about their conditions of possibility (or impossibility), rather than sticking to the wishful thinking which believes that for them to happen it is enough to want them. Humanity exists neither as a dust cloud of separate individuals nor as a unified world political community. It exists fragmented into distinct finite wholes, the forms of which have varied considerably throughout history - the nation-state being only one among...