Matine-Daftary, A. Keywords: Law of the sea | Development of international law | Mots clefs: Droit de la mer | Développement du droit international | ABSTRACT Ahmad Matine-Daftary begins this course with a foreword on the codification and progressive development of international law. The author then presents the new trends in the Law of the Sea in the twentieth century, and presents some general considerations on the work of the two Geneva conferences. He presents the regime of the high seas, the issue of the primacy of …