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Isonomía
Print version ISSN 1405-0218
Abstract
GARIBIAN, Sévane and PUPPO, Alberto. Acerca de la existencia del ius cogens internacional: Una perspectiva analítica y positivista. Isonomía [online]. 2012, n.36, pp.7-47. ISSN 1405-0218.
The concept of ius cogens expresses the tendency to limitate State sovereignty. Looking for the place of ius cogens within positivism demands to deepen the meaning of the terms of reference that affirm its existence. To say that a norm is ius cogens means that it has the necessary forcé not to be "defeated". It does not mean that tliis norm is natural law since it can be modified by other norms of the same character. A norm is "imperative" ex-post facto after a judge has qualified it as such. This does not imply recognizing that thejudges would have an unlimited power. On the contrary, the multiplication of international jurisdictions guarantees that no judge lias the final word: the content of ius cogens derives from a common denominator found in the international and regional case law, as well as in the case law of national supreme courts.
Keywords : Jus cogens; legal positivism; existence of norms; international law.