Jurisdiction — Territorial — Exemptions from and restrictions upon — Foreign armed forces — N.A.T.O. Status of Forces Agreement, 1951 — Convention of London, 1951 (Article VIII (8)) — Provision for arbitration of dispute as to whether act done in performance of official duty or whether use of vehicle of armed services unauthorized — Collision between French private car and private car driven by U.S. serviceman — Dispute as to whether U.S. serviceman on official duty — Whether it must be referred to arbitration — The law of France.