1. The Government of any signatory or acceding State may, when depositing its instrument of ratification or accession, or at any time thereafter, declare in writing to the depositary that this Convention shall apply to all or part of the territories, designated in the declaration, for the external relations of which it is responsible. The depositary shall communicate any such declaration to the Governments of all other Contracting States.
2. If the declaration was made at the time of the deposit of the instrument of ratification or accession this Convention shall enter into force in relation to those territories on the same date as the Convention enters into force in relation to the State having made the declaration. In all other cases the Convention shall enter into force in relation to those territories three months after the declaration has been received by the depositary.
3. The application of this Convention to all or part of such territories may be terminated by the Government of the State having made the declaration referred to in paragraph 1 provided that it gives three months' notice in writing to the depositary which shall notify all other Contracting States.