The system of public international law has reached a major turning point in its history and is confronting serious challenges generated by a variety of developments unfolding in the structure of the international society. This dictionary acquaints legal and other professionals, students, and interested general readers with the basic tenets of public international law, combining the features of both a brief encyclopedic dictionary and a textbook in clear, understandable language. A list of acronyms and abbreviations; a glossary of Latin phrases; a chronology that offers a historical perspective by listing major developments relating to international law throughout the centuries; a table of cases with references to entries; and a list of the 373 entries precede the main text. The survey of international law is organized into nine chapters. Chapter I contains the usual introductory topics found in international law textbooks: the nature of this law, its sources, the relationship between international and national (municipal) law, and some other general problems. Chapters II-VIII deal with matters coming within the scope of the law of peace, organized according to the framework consisting of: states, individuals, spatial context, and interaction. Chapter IX, whose subject unfortunately becomes ever more relevant, describes the rules governing the conduct of warfare, that is, international humanitarian law. Numerous cross-references in bold lead the reader to appropriate entries, and the abundant references to primary sources, mostly treaties and court cases, enable the reader to locate the materials needed for research. The selective bibliography includes books, research aids, textbooks, and casebooks, as well as recent books on special international law topics.