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
Eritrean War of Independence voted almost unanimously in favour of independence. Formal international recognition of an independent, sovereign Eritrea followed later the same year. The two main rebel groups, the Eritrean Liberation Front (ELF) and the EPLF, fought the two Eritrean Civil Wars during the war of liberation. The Italians colonised Eritrea in 1890. In 1936, Italy invaded Ethiopia and declared it part of their colonial empire, which they called Italian East Africa. Italian Somaliland was also part of that entity. There was a unified Italian administration. Conquered by the Allies in 1941, Italian East Africa was sub-divided. Ethiopia reoccupied its formerly Italian occupied