Siege of Saïo the Italian dictator, Benito Mussolini, proclaimed the colony of "Africa Orientale Italiana" (AOI, Italian East Africa), formed from Ethiopia (after the Italian victory in the Second Italo-Ethiopian War, fought 3 October 1935 – May 1936) and the existing Italian possessions of Italian Eritrea and Italian Somaliland. On 10 June 1940, Mussolini declared war on Britain and France, which made Italian military forces in Libya a threat to Egypt and those in Italian East Africa a danger to the British and French colonies in East Africa. Italian belligerence also closed the Mediterranean to Allied merchant ships and endangered British supply routes
Administrative divisions of Somalia became part of Italian East Africa with Abyssinia (Ethiopia) and Eritrea. Italian Somaliland was one of six governorates of the new colony, the Somalia Governorate, and incorporated Somali-inhabited parts of the former Abyssinia. The governorate was subdivided into 10 commissariats, which were themselves divided into residencies. Following World War II, the Italian-administered Trust Territory of Somalia consisted of six Regions. The British Somaliland protectorate also consisted of two Regions. Upon independence in 1960, the Somali Republic maintained the 12 districts of the former Italian Somaliland and British Somaliland that merged to form the new country. In 1964, a new Northeastern