Treaties — Operation of — Treaty Allegedly Inconsistent with Public Policy — The Law of Switzerland.

Treaties — Termination of — Clausula rebus sic stantibus — Whether Clausula can be relied upon by Private Party.

Nationality — Proof of — Certification by Governmental Authority — Not Invalidated by Interest of Government Issuing the Certificate — Relation between International Law and Municipal Law — Treaties Overriding Public Policy — Termination of Treaties — Clausula rebus sic stantibus.