This collection of papers provides a commentary on and critique of Grotius' "De Jure Pacs ac Belli". It is the product of a joint research project on Grotius' book, carried out by the Research Group on the Fundamental Theory of International Law, headed by the editor. An awareness among a group of young international law scholars in Japan of the need to reconsider the methodology and fundamental problems of international law led to the formation of the group in 1976. Its purpose is to carry out basic research on the theory of international law, including its validity as law, the normativity and rationalizing function of international law, and the relations between international law and, in particular, international politics, justice, war, structural violence and colonialism. Through these researches, the group seeks to clarify its own views, to understand current problems of international law within their philosophical, political, historical and multi-cultural context, and ultimately to develop an approach which can overcome the defects of the so-called "positivistic" approach without reducing the science of international law to an ideology whose actual role is to justify the value

With the resurgence of Asian nations such as China, current West-centric international law is changing in the twenty-first century. There is a pressing need to address these changes within international legal studies and overcome potential conflicts between existing and emerging powers. This structural transformation also demands a change in understanding of existing ideas and institutions. This book explores a 'trans-civilizational' approach to international law, supplementing and modifying two other prevalent perspectives: international and transnational. By considering these three layered viewpoints, this book highlights the complex phenomena surrounding the history and development of international law. The author also considers how international law operates and functions within diverse forums such as diplomatic negotiation, international organizations, and domestic political processes. This book will appeal to international law scholars and students, as well as those interested in the rise of non-Western powers and its impact on the prevalent ideas and institutions of the world.