71Under Article 5 of the Treaty, the duty to cooperate in good faith governs relations between the Member States and the institutions. It entails an obligation on the Member States to take all the measures necessary to guarantee the application and effectiveness of Community law and imposes on Member States and the Community institutions mutual duties to cooperate in good faith (see order in Case C-2/88 Imm. Zwartveld and Others [1990] ECR I-3365, paragraph 17, and Case C-275/00 First and Franex [2002] ECR I-10943, paragraph 49).
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