Muller, J. Keywords: Roman Catholic Church | Peace | Mots clefs: Eglise | Paix | ABSTRACT Joseph Muller’s subject deals with problems related to a number of issues regarding the history of Christianity and the theories of war and peace in his course. In a first part, the author focuses on a pacifying work of Christian Confessions in the past, and in a second part on the possible contribution of Christianity to the law of the future. Tout le problème posé par le sujet traité par Joseph Muller dans son cours relève d'un certain nombre de questions relatives à l'histoire du…