lnternational organization and administration — Specialized agencies of the United Nations — World Health Organization — Regional office of Pan American Health Organization — Whether absolutely immune from suit in United States courts — Whether supervision of personnel and allocation of office space constitutes commercial activity — The law of the United States

International organization and administration — Intemational officials — Director of Pan American Health Organization — Whether immune from suit in individual capacity — International Organizations Immunities Act 1945 — The law of the United States

Jurisdiction — In general — Territorial — Exemptions from and restrictions upon territorial jurisdiction — International organizations — Suit for breach and interference with contract — Whether properly invoked immunity shields defendant from defence burden — Whether international organization absolutely immune from suit in United States courts — International Organizations Immunities Act 1945 — Foreign Sovereign Immunities Act 1976 — Whether restrictive immunity doctrine applies — Whether supervision of personnel and allocation of office space by international organization constitutes commercial activity under Foreign Sovereign Immunities Act — Immunity from suit of international officials in individual capacity — The law of the United States