From the Publisher A common view holds that law within nation-states consists of positive law and constitutional law. Positive law is law made through affirmative action incorporating consent of some sort by the governed. Constitutional law is positive law that is more difficult to change than the standard forms. At the international level, the common view is that there is no constitution. All law is positive law. Contributors to this Handbook, however, find constitutionalist features at the international level. This chapter takes that analysis further arguing that yet a third category of law underlies both constitutional law and positive law. Natural law theory and principles play a critical role in accounting for the binding nature of law...