14In that regard, it should be remembered that, when a question on the validity of a measure adopted by the institutions of the European Union is raised before a national court, it is for that court to decide whether a decision on the matter is necessary to enable it to give judgment and, consequently, whether it should request the Court to rule on that question. Consequently, where the questions referred by the national court or tribunal concern the validity of a provision of EU law, the Court is, as a general rule, obliged to give a ruling (judgments of 11 November 1997, Eurotunnel and Others, C‑408/95, EU:C:1997:532, paragraph 19, of 10 December 2002, British American Tobacco (Investments) and Imperial Tobacco, C‑491/01, EU:C:2002:741, paragraph 34 and of 28 March 2017, Rosneft, C‑72/15, EU:C:2017:236, paragraph 49).
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