Approaching Perpetual Peace: Kant’s Defence of a League of States and his Ideal of a World Federation

There exists a standard view of Kant’s position on global order and this view informs much of current Kantian political theory. This standard view is that Kant advocates a voluntary league of states and rejects the ideal of a federative state of states as dangerous, unrealistic, and conceptually incoherent. This standard interpretation is usually thought to fall victim to three equally standard objections. In this essay, I argue that the standard interpretation is mistaken and that the three standard objections miss their target. Kant does advocate the establishment of a non-coercive league of states, at least in his mature political writings (such as Perpetual Peace and the Metaphysics of Morals), but he does so for different reasons than is usually thought and without rejecting the ideal that a world federation of states eventually be realized. I end by indicating how Kant’s revised view can be made productive for present-day philosophical purposes.