In their respective projects to consolidate the institutions of International Right, Rousseau and Kant address the issue concerning the binding character of international juridical norms. While Rousseau states that it is necessary to constitute a coercive supranational power, authorized to force the European States to enter the International confederation, to compel them to remain in it and to enforce international laws, Kant considers that such a power would threaten the sovereignty of the States, and leans towards a confederation of free (...) States, not subordinated to a common coercive power. In this paper I analyze the premises which underlie each of these approaches and that might help to understand the different positions assumed by Rousseau and Kant regarding the problem of the juridical regulation of international relations. (shrink)