P. Fernández Arroyo, Diego Keywords: Judicial competence | International law of procedure | Private international law | Mots clefs: Compétence judiciaire | Droit international de procédure | Droit international privé | ABSTRACT Diego P. Fernandez Arroyo, Professor at the complutense university of Madrid, points out in his introduction to his course that the criteria on which the authorities base their jurisdiction for disputes relating to private international affairs are sometimes difficult to justify. On the basis of this ob…