Despite the theoretical and practical importance of the question of conflict between treaties, little has been written on the subject. This monograph fills this gap by providing a detailed analysis of the main issues. The book is divided into three parts. The first deals with the definition of conflict, causes of conflict, and different types of conflict. The second part examines different sources of international law in order to identify rules of international law relating to the resolution of conflicts. The third part addresses the actual process of resolving conflicts between treaties. After describing different stages of treaty conflict-resolution, it discusses some special principles advanced for resolving conflicts between certain types of treaties, namely, those relating to the protection of human rights, those concerning dispute settlement, and treaties dealing with private law issues.