10 ETS 166 – European Convention on Nationality, 6.XI.1997 Chapter IX – Application of the Convention Article 25 – Declarations concerning the application of the Convention 1 Each State may declare, at the time of signature or when depositing its instrument of ratification, acceptance, approval or accession, that it will exclude Chapter VII from the application of the Convention. 2 The provisions of Chapter VII shall be applicable only in the relations between States Parties for which it is in force. 3 Each State Party may, at any subsequent time, notify the Secretary General of the Council of Europe that it will apply the provisions of Chapter VII excluded at the time of signature or in its instrument of ratification, acceptance, approval or accession. This notification shall become effective as from the date of its receipt. Article 26 – Effects of this Convention 1 The provisions of this Convention shall not prejudice the provisions of internal law and binding international instruments which are already in force or may come into force, under which more favourable rights are or would be accorded to individuals in the field of nationality. 2 This Convention does not prejudice the application of: a the 1963 Convention on the Reduction of Cases of Multiple Nationality and Military Obligations in Cases of Multiple Nationality and its Protocols; b other binding international instruments in so far as such instruments are compatible with this Convention, in the relationship between the States Parties bound by these instruments. Chapter X – Final clauses Article 27 – Signature and entry into force 1 This Convention shall be open for signature by the member States of the Council of Europe and the non-member States which have participated in its elaboration. Such States may express their consent to be bound by: a signature without reservation as to ratification, acceptance or approval; or b signature subject to ratification, acceptance or approval, followed by ratification, acceptance or approval. Instruments of ratification, acceptance or approval shall be deposited with the Secretary General of the Council of Europe.