The International Civil Aviation Organization (ICAO) is a United Nations specialized agency established in 1944 that helps its 193 Member States cooperate on international civil aviation. Through its Assembly, Council, technical bureaux, regional offices, Standards and Recommended Practices, global plans, implementation support, and policy guidance, ICAO advances safe, secure, efficient, interoperable, and sustainable air transport while responding to digitization and new flight and propulsion technologies. Its headquarters and permanent seat are in Montréal, Canada.