international telecommunication service

aeronautical telecommunication service

airline telecommunication and information service

panel on aeronautical fixed telecommunication in Europe

aeronautical telecommunication network panel

international humanitarian law (See international law of armed conflict)

International legion for the Defence of Ukraine (ILDU) / International Legion of Territorial Defence of Ukraine / Ukrainian Foreign Legion

international air service

International Air Service Transit Agreement

International Aviation Weather Service Programme

international earth rotation service

scheduled international air service

branch (military/service branch, armed service)

separate from active service / the service

Y service (Y-service) / Y-station

regional meteorological service/ regional weather service (RWS)

emergency service / emergency operations service

all-embracing system of international security

Bureau of International Narcotics Matters

comprehensive system of international security

international agencies and alliances

International Air Transport Association (IATA)

international alliance

international arrest warrant

International Civil Aviation Organization (ICAO)

international civil presence

International Civilian Mission in Haïti (MICIVIH)

International Committee of the Red Cross (ICRC)

international community

international conspiracy

International Convention on the Conduct of Warfare

international date line

international disaster relief