5651. World (Countries, 2006)
United Nations, International Organization for Standardization, United States Department of State, Bureau of Intelligence and Research, Europa, International Border Treaty between the Republic of Yemen and the Kingdom of Saudi Arabia , BBC News, ESRI, Global Mapping International, Executive Secretary for Foreign Names - U.S. Board on Geographic Names, United States Central Intelligence Agency, and National Center for Geographic Information and Analysis. World Countries 2006 represents the boundaries for the countries of the world as they existed in January 2006. United Nations.