UN General Assembly
1964

118. Explicit recognition of the existence of an international public order, of a genuine jus cogens irrevocably binding all States, has just been given — although the idea itself is much older — by the United Nations itself in General Assembly resolution 1902 (XVIII), in which it virtually associates itself with the report of the International Law Commission and especially the report on the validity, duration and termination of treaties. This, at any rate, confirms our belief that the Members of the United Nations have no objection to recognizing the existence of an international public order to which they are subject and that all that remains to be done now is to lay down in detail the rules or content which that system of public order must have.