Diplomatic relations — Immunity — Representative to international organization — Immunity from civil jurisdiction — Vienna Convention on Diplomatic Relations, 1961 — Article 31(l)(a) — Exceptions to immunity — Real action relating to private immovable property situated in the territory of the receiving State — Whether including claim for charges incurred in respect of tenancy agreement

International organizations — Immunity — Representative to international organization — Jurisdictional immunity — Member of permanent delegation of Member State to NATO — Applicability of principles contained in Vienna Convention on Diplomatic Relations, 1961 — The law of Belgium