Ray, Jean Keywords: Treaties | Public international law | Revision | Mots clefs: Traités | Droit international public | Révision | ABSTRACT History and especially the history of our time, presents to us a large number of cases in which certain clauses of treaties have been attacked, by a State related by them, in the name of certain principles of international law. In order to study this issue, Jean Ray starts with a study of certain diplomatic procedures related to the Oriental issue. He then studies a few affairs b…