This Liber Amicorum appears on the occasion of Professor Christian Dominic 's 80th birthday. It includes contributions by his colleagues and friends from distinguished universities and international institutions. It covers different fields in which he has excelled. This collective work is divided into three main sections. The first section examines matters concerning the principles and fundamentals of international law in the 21st Century. The second section is devoted to the law and practice of International Organizations and Courts. The third section addresses issues related the international protection of human rights and international humanitarian law. The result is a collection of stimulating analysis of most of the topical problems of international law. The contributions are in both English and French. Ce Liber Amicorum est publi l occasion du 80 me anniversaire du Professeur Christian Dominic . Il comprend des contributions de ses coll gues et amis, venant de prestigieuses universit s et institutions internationales. Il couvre diff rents domaines dans lesquels celui-ci a excell . Cet ouvrage collectif est divis en trois sections. La premi re section a trait aux principes et fondamentaux du droit international du 21 me si cle. La deuxi me section est consacr e au droit et la pratique des organisations internationales et des cours. La troisi me section tudie certains aspects concernant la protection internationale des droits de l homme et du droit international humanitaire. Il en r sulte une collection d analyses stimulantes sur des probl mes tr s actuels du droit international. Les contributions sont en anglais et en fran ais.