Treaties — Conclusion and operation of — Effect of municipal legislation — Scope of reservation in Brussels International Convention of 1910 relating to Assistance and Salvage at Sea — Whether restrictive of power of State to waive by municipal legislation sovereign immunity in salvage actions — The law of the United States of America.

Jurisdiction — Territorial — Exemptions from — Foreign States — Sovereign immunity — The law of Greece — Determination thereof in courts of the United States — Need for — Waiver of immunity of Government of forum in proceedings instituted by alien dependent upon reciprocity in State of alien — Ascertainment of existence of reciprocity — The law of the United States of America.