Schachter, Oscar Keywords: United Nations | Decision-making | Peacekeeping | International police | Economic development | Mots clefs: Nations Unies | Prise de décisions | Maintien de la paix | Police internationale | Développement économique | ABSTRACT The main objective that Oscar Schachter assigns to his course is to show how the law acts within the political system developed within the United Nations since 1945. The author begins with the presentation of place of law in the process of decision in the political organs of the Uni…