International organizations — Immunity — Jurisdictional immunity — NATO — Civilian personnel — Employment dispute — Claim for damages following dismissal — Contract specialist not a national of receiving State — Whether courts of receiving State have jurisdiction over claim — NATO Status of Forces Agreement, 1951 — Division of civilian personnel into “civilian component” and locally recruited workers — Whether locally recruited workers employed under private law relationship

State immunity — Jurisdictional immunity — Employment dispute — NATO personnel — Action against Belgium as NATO receiving State — Whether municipal courts have jurisdictions over dispute concerning civilian workers — NATO Status of Forces Agreement, 1951 — The law of Belgium