Italian auxiliary cruiser Ramb II significant presence of Royal Navy in the Red Sea. With the start of Operation Compass in North Africa and the defeat of the Italian troops at Sidi Barrani on 9-12 December 1940, it became clear that it would be impossible for Italian troops in Libya to reach Italian East Africa to break its isolation. The fuel supplies were dwindling and were projected to be exhausted by June 1941. In anticipation of the inevitable fall of the colony, a plan was developed to send as many ships as possible to Japan or occupied France and to destroy all other ships that
Italian East Africa a threat to Egypt and those in the Italian East Africa a danger to the British and French territories in the Horn of Africa. Italian belligerence also closed the Mediterranean to Allied merchant ships and endangered British supply routes along the coast of East Africa, the Gulf of Aden, Red Sea and the Suez Canal. (The Kingdom of Egypt remained neutral during World War II, but the Anglo-Egyptian Treaty of 1936 allowed the British to occupy Egypt and Anglo-Egyptian Sudan.) Egypt, the Suez Canal, French Somaliland and British Somaliland were also vulnerable to invasion, but the "Comando Supremo" (Italian General