Artikel 20

1. After the entry into force of this Convention, the Committee of Ministers of the Council of Europe may, after consultation of the Parties, invite any State not a member of the Council of Europe, as well as the European Union, to accede to this Convention, by a decision taken by the majority provided for in Article 20.d, of the Statute of the Council of Europe, and by the unanimous vote of the representatives of the Contracting States entitled to sit on the Committee of Ministers.
2. In respect of any acceding State or of the European Union, in the event of its accession, the Convention shall enter into force on the first day of the month following the expiration of a period of three months after the date of deposit of the instrument of accession with the Secretary General of the Council of Europe.