State immunity — Attachment and execution — Debt owed to foreign State — France-Iran agreements for construction and financing of enriched uranium plant and nuclear reactors — Loans made to French Atomic Energy Commission and other undertakings by Iran — Repudiation of agreements by Iran — Claim for compensation by companies involved — Whether companies entitled to attach funds representing loan repayments due to Iran — Whether such funds to be regarded as allocated for a specific purpose

State immunity — Jurisdictional immunity — Commercial activities — Whether construction and financing of uranium plant and nuclear reactors a commercial activity

State immunity — Waiver — Agreement containing provision for International Chamber of Commerce arbitration — Whether amounting to waiver of immunity — The law of France