The International Civil Aviation Organization (ICAO) is an agency of the United Nations that manages international civil aviation. ICAO was created in 1944 to regulate and promote international air travel. Its key objectives are safety, efficiency, facilitation, regional planning, and economics in civil aviation. ICAO sets standards and regulations necessary for aviation safety, security, efficiency and regularity, among other goals. It has over 190 member countries and its headquarters is located in Montreal, Canada.