The Academy is an institution for the study and teaching of public and private international law and related subjects. Its purpose is to encourage a thorough and impartial examination of the problems arising from international relations in the field of law. The courses deal with the theoretical and practical aspects of the subject, including legislation and case law. All courses at the Academy are, in principle, published in the language in which they were delivered in the Collected Courses of the Hague Academy of International Law. This volume contains: - The Role of the Permanent Court of Arbitration in International Dispute Resolution (Addresses) by H. JONKMAN, former Secretary-General of the Permanent Court of Arbitration; - Principes et pratique de procédure dans l'arbitrage commercial international, par D. HASCHER, conseiller à la cour d'appel de Paris; - Création et disparition de l'Etat (à la lumière du démembrement de trois fédérations multiethniques en Europe), par V.-D. DEGAN, professeur à l'Universit¿ de Rijeka.