M. Schwebel, S. Keywords: Aggression | Self-defence | Use of force | International relations | Intervention | Mots clefs: Agression | Défense légitime | Force | Relations internationales | Intervention et non-intervention | ABSTRACT S.M. Schwebel's course deals with the issues of aggression, intervention, and self-defence in the context of the question of the definition of aggression. After a first chapter on the need and importance of the definition of the concept of aggression, the author examines several types of approaches t…