In recent decades a great deal of attention has been given to Kant’s writings on politics as presenting a possible path to lasting peace. In this literature too high an expectation is created over what Kant’s cosmopolitan thinking might achieve. Caranti’s book provides an excellent antidote to these speculations by spelling out clearly the implications of Kant’s peace theory. I suggest there may even be better ways for understanding the guarantee of perpetual peace, the role of religion and the ideal of the moral politician than Caranti maintains.