Arbitration — Tribunal — Status — Distinction between international and domestic arbitration — Agreement between State and foreign company — Provision for UNCITRAL arbitration — Whether international arbitration — Applicable law — Public policy

Relationship of international law and municipal law — Customary international law — As part of English law — Contract between State and foreign company — Contract governed by English law — Whether including international law — Principle that State cannot rely upon internal law to avoid international obligation — Whether exception to principle that courts will not enforce contract illegal by law of place of performance

State responsibility — Imputability — Ultra vires acts of officials — Acts in official capacity — Whether acts of the State — Contractual obligations of the State — Contract with foreign company — Whether international obligations

War and armed conflict — Internal conflict — Government obtaining military assistance from foreign private company