This volume offers a historical-juridical foundation for the development of an innovative and truly global legal system.This volume offers a historical-juridical foundation for the development of an innovative and truly global legal system that permits humanity to reorder itself according to acknowledged global needs and evolving consciousness. It outlines a new global law that will constitute a genuine legal order to serve the common good of all humanity and lead to the development of durable world peace.This volume offers a historical-juridical foundation for the development of an innovative and truly global legal system that permits humanity to reorder itself according to acknowledged global needs and evolving consciousness. It outlines a new global law that will constitute a genuine legal order to serve the common good of all humanity and lead to the development of durable world peace.The dislocations of the worldwide economic crisis, the necessity of a system of global justice to address crimes against humanity, and the notorious democratic deficit of international institutions highlight the need for an innovative and truly global legal system, one that permits humanity to reorder itself according to acknowledged global needs and evolving consciousness. A new global law will constitute, by itself, a genuine legal order and will not be limited to a handful of moral principles that attempt to guide the conduct of the worlds peoples. If the law of nations served the hegemonic interests of Ancient Rome, and international law served those of the European nation-state, then a new global law will contribute to the common good of all humanity and, ideally, to the development of durable world peace. This volume offers a historical-juridical foundation for the development of this new global law.Part I. From Ius gentium to International Law: 1. The ius gentium, a Roman concept; 2. The ius commune, a medieval concept; 3. International law, a modern concept; Part II. Tol3-