This chapter first of all summarises in 11 succinct points the at-times complex arguments of Part I of the volume. It notes that despite the logical cogency of the arguments and the widespread perception in our day of the clamorous failures of the contemporary geopolitical order based on nation states, there will be strong resistance to the ideas presented by various vested interests that might stand to lose out in such a transition to a supranationally based order with enforcement powers, not least by the so-called great powers of today. But it is argued, drawing on Hegel’s philosophy of history as ultimately a rational process, that given the signal failures of the contemporary set-up and the logical cogency of the supranational argument buttressed by the political philosophies of Hobbes and Kant, this is the way that the world must evolve; perhaps not in the very immediate future but over the coming decades. The chapter closes with some further reflections on Hegel’s philosophy of history noting that while it has certain clear weaknesses, it contains a spectacular core of truth regarding the centrality of rationality to human endeavour in all fields and in particular in the sciences: for reality to be intelligible, it must be ultimately rational.