C. Witenberg, J. Keywords: Claims | Universal jurisdiction | Mots clefs: Réclamations | Juridiction internationale | ABSTRACT J.C.Witenberg begins his course on the Admissibility of Complaints in Presence of International Jurisdictions with a presentation of the sources and the definition and classification of the means of admissibility. The author then studies the condition of admissibility concerned with the parties to the dispute (the endorsement) and the conditions of admissibility of individual complaints. …