Article 10

1 After the entry into force of this Convention, the Committee of Ministers of the Council of Europe may decide unanimously to invite any European non-member State to accede thereto. This invitation must receive the express agreement of each of the States which have ratified the Convention.

2 Such accession shall be effected by depositing with the Secretary General of the Council of Europe an instrument of accession which shall take effect three months after the date of its deposit**.