Giraud, Émile Keywords: Self-defence | Use of force | International relations | Mots clefs: Défense légitime | Force | Relations internationales | ABSTRACT The author explains that the purpose of Emile Giraud's course is not to present and defend a thesis, but to explain an inherent right related to self-defence. To do this, the author begins with a comparison of self-defence in domestic law and international law. The author then poses the question of when there will be self-defence. Finally, the author studies its effects. Le cours d'Emile Giraud n'a pas pour but de présenter e…