State territory — Parts of — Territorial waters — Breadth and delimitation of the maritime belt — Islands — Subsoil of territorial waters — Dispute between foreign States over territorial waters — Oil extracted from disputed area — Title — Whether municipal court can determine title to oil without considering boundary dispute — Act of State doctrine — The law of the United States

State responsibility — Nature and kinds of — For taking of, or interference with, property — Confiscation of property — Definition of — Whether termination of oil concession a confiscation — Act of State doctrine — Hickenlooper Amendment — The law of the United States

States as international persons — In general — Recognition of acts of foreign States and governments — Act of State doctrine — Scope of doctrine — Boundary dispute — Oil extracted from disputed area — Whether United States courts entitled to determine title to oil — Hickenlooper Amendment — Meaning of “confiscation” — Whether applicable to termination of oil concession — Whether fact concessionaire prevented from exploiting concession a confiscation — The law of the United States