Siege of Khartoum was given a credit of £100,000 and was promised by the British and Egyptian authorities "all support and cooperation in their power.". On his way to Khartoum with his assistant, Colonel Stewart, Gordon stopped in Berber to address an assembly of tribal chiefs. Here he committed a cardinal mistake by revealing that the Egyptian government wished to withdraw from Sudan. The tribesmen became worried by this news, and their loyalty wavered. Gordon arrived at Khartoum on 18 February 1884, but instead of organising the evacuation of the garrisons, set about administering the city. His first decisions were to reduce the
Khartoum of them diplomats. The US ambassador, the US deputy ambassador, and the Belgian "chargé d'affaires" were murdered. The remaining hostages were released. A 1973 United States Department of State document, declassified in 2006, concluded: "The Khartoum operation was planned and carried out with the full knowledge and personal approval of Yasser Arafat." In 1977, the first oil pipeline between Khartoum and the Port of Sudan was completed. Throughout the 1970s and 1980s, Khartoum was the destination for hundreds of thousands refugees fleeing conflicts in neighboring nations such as Chad, Eritrea, Ethiopia, and Uganda. Many Eritrean and Ethiopian refugees assimilated into