54Finally, where the nature and the broad logic of the treaty in question permit the validity of the act of European Union law to be reviewed in the light of the provisions of that treaty, it is also necessary that the provisions of that treaty which are relied upon for the purpose of examining the validity of the act of European Union law appear, as regards their content, to be unconditional and sufficiently precise (see IATA and ELFAA, paragraph 39, and Intertanko and Others, paragraph 45).
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