The subject of the present study is the question of conflict between treaties. Its primary purpose is to identify the methods of resolving conflicts between treaty obligations. The materials are divided into three parts. Part One presents some preliminary considerations regarding the concept of conflict, and the distinction between real and false conflicts. Part Two aims at identifying rules of international law for resolving conflicts between treaties, drawing on different sources of international law. Part Three describes different stages of conflict resolution, and examines some special rules advanced for resolving conflicts between certain types of treaties. The final conclusion is that Article 30 of the Vienna convention, with some modifications, soundly reflects the actual position of international law on the matter