Treaties — Conclusion and operation of — Accession — Accession in advance — Whether possible.

Treaties — Interpretation of — Miscellaneous — Protocol signed by Parties — Not published or ratified — Whether Protocol can be used in relation to interpretation of another Agreement concluded by same Parties.

Treaties — Modification of — Consent of all Parties — Need for.

Arbitration — Procedure — Jurisdiction — Jurisdiction of Arbitral Commission on Property, Rights and Interests in Germany — Conferred only in relation to rights of United Nations nationals — Extension of that jurisdiction — Conditions of such extension — Capacity to appear as party before Arbitral Commission — Effect of entitlement to “most-favoured-nation” treatment.