1. Any dispute between two or more States Parties concerning the interpretation or application of this Convention which cannot be settled through negotiation shall, at the request of one of them, be submitted to arbitration. If within six months from thc date of the request for arbitration the Parties are unable to agree on the organization of the arbitration, any one of those Parties may refer the dispute to the International Court of Justice by request in conformity with the Statute of the Court.

2. Each State may, at the time of signature or ratification of this Con vention or accession thereto, declare that it does not consider itself bound by paragraph 1 of this article. The other States Parties shall not be bound by paragraph 1 of this article with respect to any State Party having made such a reservation.

3. Any State Party having made a reservation in accordance with paragraph 2 of this article may at any time withdraw this reservation by notification to the Secretary-General of the United Nations.