The Commission confirms that, in accordance with Article 20 of the Treaty on the Functioning of the European Union (TFEU), EU citizenship is additional to and does not replace national citizenship (that is, the citizenship of an EU Member State). It also confirms that in the hypothetical event of a secession of a part of an EU Member State, the solution would have to be found and negotiated within the international legal order. Any other consideration related to the consequences of such event would be of a conjectural nature.