International organizations — Immunity — Representatives accredited to international organizations — UNESCO — Permanent representative — Jurisdictional immunity — Lease — Action for eviction — Whether representative entitled to immunity — Whether immunity extends to wife — France-UNESCO Headquarters Agreement, 1954, Article 18

Diplomatic relations — Immunity — Vienna Convention on Diplomatic Relations, 1961, Article 31 — Service of documents on foreign diplomatic envoys — Non-compliance with requisite procedure — Sanction of nullity — The law of France