which arises between two or more of the Participants, or between any of them
and the Organisation, concerning the interpretation or application of this
Arrangement, and which cannot be settled by mutual consent, shall be
submitted at the request of any party to the dispute to a single arbitrator
to be appointed by the President of the International Court of Justice. The
arbitrator may not be a national of a State which is party to the dispute,
nor be permanently resident in that State.