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
HMS Khartoum (F45) and the sloop in search for "Torricelli" near Perim Island. After interception, "Khartoum" and these warships took part in a surface engagement with the submarine, during which "Torricelli" was sunk and "Shoreham" damaged. However, during the battle, "Khartoum" was hit by return fire which damaged the after torpedo tube mounting. Some five and a half hours later, at 11.50am (local time), a torpedo's compressed air chamber exploded, propelling the warhead through the deck house of number 3 4.7-inch mount. and causing a serious uncontrollable fire from a ruptured oil tank there. This resulted in an explosion of the ship's artillery