State immunity — Immunity from jurisdiction — Foreign State — Dispute concerning works carried out on embassy residence — Claim by adjacent owners for damage caused to apartment building by alterations to embassy residence done without permission — Whether foreign State entitled to jurisdictional immunity

State responsibility — Claim against French State for loss arising from recognition by municipal courts of jurisdictional immunity of defendant — Whether claim directed against head of diplomatic mission or foreign State — Vienna Convention on Diplomatic Relations, 1961, Article 31 — Whether application of Convention or specific rules on State immunity in issue and necessarily causing loss alleged — The law of France