Treaties — Interpretation — Rules of — Rejection of Presumption against Redundancy — Interpretation of United States-Panama Claims Convention of 1926.

Arbitration — Jurisdiction — Claims Arising Subsequent to Ratification of Arbitral Agreement.

State Responsibility — Conditions of — Expropriation by Legislation — Necessity of Actual Interference with Possession — Arbitration — Jurisdiction — Claims Arising subsequent to Ratification of Arbitral Agreement — Treaties — Interpretation — Rules of — Presumption against Redundancy — Interpretation of the United States-Panama Claims Convention, 1926.