Book excerpt: International Sustainable Development Law is a component of Encyclopedia of Development and Economic Sciences in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The Theme on International Sustainable Development Law reflects on the rights and duties of states and other actors in the development process. The chapters range from International Development Law standard applications of economic theory to more radical approaches. These three volumes are aimed at the following five major target audiences: University and College Students Educators, Professional Practitioners, Research Personnel and Policy Analysts, Managers, and Decision Makers, NGOs and GOs.