Artikel 13

Any State may, at the time of signature, ratification or accession, declare that the present Convention shall extend to all the territories for the international relations of which it is responsible, or to one or more of them. Such a declaration shall take effect on the date of entry into force of the Convention for the State concerned.
At any time thereafter, such extensions shall be notified to the Ministry of Foreign Affairs of the Netherlands.
When the declaration of extension is made by a State which has signed and ratified, the Convention shall enter into force for the territories concerned in accordance with Article 11. When the declaration of extension is made by a State which has acceded, the Convention shall enter into force for the territories concerned in accordance with Article 12.