Diplomatic relations — Special missions — Convention on Special Missions, 1969 — Inviolability and immunity of member of special mission — Requirement that receiving State consents to special mission — Official visiting State without such consent — Whether entitled to immunity in context of extradition request

State immunity — Jurisdictional immunity — Officials — Criminal proceedings — Immunity ratione personae — Limited to the most high-ranking officials — Whether applicable to senior security official — Immunity ratione materiae — Whether official entitled to State immunity in respect of official acts — Allegation of kidnapping by officials of one State on the territory of another — Whether distinction between civil and criminal proceedings

Extradition — Abuse of process — Whether suspect lured into territory to facilitate arrest — Immunity — Official accused of extraditable offence — Offence allegedly performed in exercise of official functions — The law of England