34Moreover, even though Article 346(1)(b) TFEU refers to measures that a Member State may consider necessary for the protection of the essential interests of its security, that provision cannot be construed as conferring on Member States a power to depart from the provisions of the Treaty simply in reliance on those interests (see, to that effect, the judgments in Commission v Finland, EU:C:2009:778, paragraph 47, and Insinööritoimisto InsTiimi, EU:C:2012:324, paragraph 35). The Member State which wishes to avail itself of the derogation allowed under Article 346(1)(b) TFEU must show that such derogation is necessary in order to protect its essential security interests (see, to that effect, the judgments in Commission v Finland, EU:C:2009:778, paragraph 49, and Insinööritoimisto InsTiimi, EU:C:2012:324, paragraph 45).
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