Arangio-Ruiz, Gaetano Keywords: European security | Human rights | Intervention | Acte final d'Helsinki | Mots clefs: Sécurité européenne | Droits de l homme | Intervention et non-intervention | Acte final de la Conférence sur la sécurité et la coopération en Europe (Helsinki, 1 août 1975) | ABSTRACT Gaetano Arangio-Ruiz, Professor at the University of Rome, focuses on a dispute that has arisen since the conclusion of the Conference on Security and Cooperation in Europe, on the impact of the non-intervention principle on international rules f…