C. Jessup, Philip Keywords: United Nations | Law of procedure | Mots clefs: Nations Unies | Droit procédural | ABSTRACT Philip Jessup begins the introduction of his course with an explanation of the term “Parliamentary Diplomacy", namely the practice of intergovernmental negotiations and discussions conducted within the fixed rules of procedure in organizations such as the General Assembly and the United Nations Councils. After a presentation of parliamentary law in national legislation, the author presents compari…