66That conclusion cannot be called into question on the basis of Article 4(3) TEU, which requires the Member States to take any appropriate measure, general or particular, to ensure fulfilment of the obligations arising out of the Treaties or resulting from the acts of the institutions of the European Union. As regards the system of remedies sufficient to ensure effective judicial review in the fields covered by EU law, Article 4(3) TEU cannot be interpreted as meaning that the Member States are required to provide new legal remedies, which they are not however required to do under the second subparagraph of Article 19(1) TEU.
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