The Member States 25 March 1957, Consolidated version of the Treaty on the Functioning of the European Union#PART TWO - NON-DISCRIMINATION AND CITIZENSHIP OF THE UNION#Article 21(ex Article 18 TEC)

(c) the right to enjoy, in the territory of a third country in which the Member State of which they are nationals is not represented, the protection of the diplomatic and consular authorities of any Member State on the same conditions as the nationals of that State; (d) the right to petition the European Parliament, to apply to the European Ombudsman, and to address the institutions and advisory