31According to settled case-law, under the principle of sincere cooperation laid down in Article 4(3) TEU, it is for the courts of the Member States to ensure legal protection of an individual’s rights under EU law. In addition, the second subparagraph of Article 19(1) TEU requires Member States to provide remedies sufficient to ensure effective legal protection in the fields covered by EU law (judgment of 19 November 2014, ClientEarth, C‑404/13, EU:C:2014:2382, paragraph 52).
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