In the present writer's view, certain decisions of international organizations are to be recognized as manifestations of international law in their own right; those, namely, which address themselves to the members of the relevant organization, or to some of them, and bind them as to their conduct. Being manifestations in written form, their interpretation may as much constitute a problem as does the interpretation of treaties. The main question, here, is whether the methods and rules of treaty interpretation also apply to the interpretation of these “conductdecisions” of international organizations.