... The
High Contracting Parties agree that
disputes arising between them relating to the
interpretation or
application of this
Convention shall, if they cannot be settled by direct
negotiation, be referred for
decision to the
Permanent Court of International Justice. In
case either or both of the
States Parties to such a
dispute should not be
Parties to the
Protocol of December 16th, 1920, relating to the
Permanent Court of International Justice, the
dispute shall be referred, at the
choice of the
Parties and in
accordance with the
constitutional procedure of each
State, either to the
Permanent Court of International Justice or to a
court of arbitration constituted in
accordance with the
Convention of October 18th, 1907, for the
Pacific Settlement of International Disputes, or to some other
court of arbitration.
...