Khartoum society, while others settled in large slums at the outskirts of the city. Since the mid-1980s, large numbers of refugees from South Sudan and Darfur fleeing the violence of the Second Sudanese Civil War and Darfur conflict have settled around Khartoum. In 1991, Osama bin Laden purchased a house in the affluent al-Riyadh neighborhood of the city and another in Soba. He lived there until 1996, when he was banished from the country. Following the 1998 U.S. embassy bombings, the United States accused bin Laden's al-Qaeda group and, on 20 August, launched cruise missile attacks on the al-Shifa pharmaceutical factory
University of Khartoum Part 2 is once a year. In all the previous exams, faculty graduate achieved outstanding grades. Faculty of Dentistry Student have an association through which they can realize a lot of their activities. It is a member in the International Association of Dental Students (IADS). ADSUK organized one of the most successful IADS' conferences in Khartoum in 2006. One of the most programs arranged by ADSUK are the Health Field Trip where students as well as staff member travel to rural areas and stay there to give distant citizens dental services and to educate them. University of Khartoum plays a