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IMPORTANCIA DE LA JURISPRUDENCIA INTERNACIONAL EN LA DETERMINACIÓN DE LA EXISTENCIA DE UNA NORMA CONSUETUDINARIA

Can judicial decisions influence the progressive development of customary international law? Are the methods of the International Court of Justice adequate for the determination of the existence and scope of customary norms? This paper seeks to examine, first, the role of the International Court of Justice and its predecessor in the determination of the existence, content and scope of customary norms; and, second, the effect that this role of determination has had in the decisions of other tribunals, in the actions of international organizations, and the practice of States. Finally, we will venture an opinion about the importance of this quasi-legislative role of judicial decisions in the formation of customary international law.