Philosophers have never shied away from interrogating the nature of our obligations beyond borders. From Hobbes to the international lawyers Grotius, Pufendorf, Vattel, and of course Kant, modern philosophy has always attempted to define the nature and shape of a just international order, and the types of mutual obligations members of different political communities might share. In today's hyper-connected world, these issues are more important than ever and have been an impetus to a political theory with global scope and aspirations.

Global Political Theory offers a comprehensive...