E. L. Vaughan Williams K. C., R. Keywords: Diplomacy | Mots clefs: Diplomatie | ABSTRACT The aim of the course of Vaughan Williams is to describe, from a historical point of view, the development of diplomacy in Europe and in the States outside Europe, which owe their origin to European colonization, and which, consequently, are assimilated into European countries through their civilization and their traditions. After general considerations on diplomacy, the author focuses on diplomatic missions, treaties, tec…