Expropriation — Extraterritorial effect — Expropriation without compensation of shares in company — Effect on debt owed to company by debtor in United States — Situs of debt — United States policy against expropriation without compensation

Relationship of international law and municipal law — Act of State and justiciability — United States act of State doctrine — Extent and rationale — Extraterritorial exception — Acts of State purporting to affect property situated within United States — Whether contractual claim against United States corporation necessarily situated in United States — Contract to be performed in Iran — Requirement that courts should not interfere with diplomatic efforts of the Executive — Decision by United States court contradicting decision of Iran-United States Claims Tribunal — Whether such a decision would create a potential interference with diplomatic efforts of the Executive — The law of the United States