International organizations — Officials — Immunity from execution — International Fund for Agricultural Development (“IFAD”) — Deputy Director — Lease — Action for eviction from private residence — Whether official entitled to immunity from execution — IFAD-Italy Headquarters Agreement, 1978, Article XV, Section 36 — Officials assimilated to diplomatic agents for purposes of immunity — Waiver of immunity — Discretion of head of organization

Diplomatic relations — Immunity from jurisdiction and execution — Diplomatic agent — Vienna Convention on Diplomatic Relations, 1961, Article 31 — Exceptions to immunity — Real action relating to private immovable property situated in the territory of the receiving State — Whether including claim objecting to order for eviction from private residence — Overriding requirement of non-interference with performance of diplomatic functions — The law of Italy