Article 12 1. In relation to a Contracting State which does not, in accordance with the provisions of paragraph 1 of Article 1 or of Article 4 of this Convention, grant its nationality at birth by operation of law, the provisions of paragraph 1 of Article 1 or of Article 4, as the case may be, shall apply to persons born before as well as to persons born after the entry into force of this Convention. 2. The provisions of paragraph 4 of Article 1 of this Convention shall apply to persons born before as well as to persons born after its entry into force. 3. The provisions of Article 2 of this Convention shall apply only to foundlings found in the territory of a Contracting State after the entry into force of the Convention for that State. Article 13 This Convention shall not be construed as affecting any provisions more conducive to the reduction of statelessness which may be contained in the law of any Contracting State now or hereafter in force, or may be contained in any other convention, treaty or agreement now or hereafter in force between two or more Contracting States. Article 14 Any dispute between Contracting States concerning the interpretation or application of this Convention which cannot be settled by other means shall be submitted to the International Court of Justice at the request of any one of the parties to the dispute. Article 15 1. This Convention shall apply to all non-self-governing, trust, colonial and other non-metropolitan territories for the international relations of which any Contracting State is responsible; the Contracting State concerned shall, subject to the provisions of paragraph 2 of this Article, at the time of signature, ratification or accession, declare the non-metropolitan territory or territories to which the Convention shall apply ipso facto as a result of such signature, ratification or accession. 2. In any case in which, for the purpose of nationality, a non-metropolitan territory is not treated as one with the metropolitan territory, or in any case in which the previous consent of a non-metropolitan territory is required by the constitutional laws or practices of the Contracting State or of the nonmetropolitan territory for the application of the Convention to that territory, that Contracting State shall endeavour to secure the needed consent of the non-metropolitan territory within the period of twelve months from the date of signature of the Convention by that Contracting State, and when such consent has been obtained the Contracting State shall notify the Secretary- 82