Dr Sigismond Cybichowski, le Keywords: Judicial competence | International criminal law | Mots clefs: Compétence judiciaire | Droit pénal international | ABSTRACT The problem of the Jurisdiction of Courts for Offenses Committed Outside the Territory lies, emphasizes Sigismund Cybichowski, in the field of international criminal law, which is itself a part of private international law. Since the scientific nature of his research requires a scientific basis, the author begins his course with an outline of the conception…