Over the last decade, international constitutionalism has been the focal point of contemporary international legal debate and practice, as evidenced inter alia by the Kadi-Jurisprudence of the European Courts and the burgeoning literature that employs constitutional as well as fragmentation terms with respect to modern international law. The discourse deals with the pluralistic structure of modern international law, post-national law and constitutional diversity, as well as the quest for an international rule of law, the shifting allocation of authority in international law and the possible demise of general international law. This seemingly new discourse is all- pervasive, with implications in international politics, law, trade, human rights and, global environmental law.