“In Peshawar during the 1980s he had been overshadowed by Abdullah Azzam. In Saudi Arabia he was just one rich young sheikh among hundreds. But in Khartoum his wealth made him a rare and commanding figure. He was powerful enough to order men to their deaths. Yet he fashioned himself a lecturer-businessman, an activist theologian in the image of Azzam.”

“In Peshawar during the 1980s he had been overshadowed by Abdullah Azzam. In Saudi Arabia he was just one rich young sheikh among hundreds. But in Khartoum his wealth made him a rare and commanding figure. He was powerful enough to order men to their deaths. Yet he fashioned himself a lecturer-businessman, an activist theologian in the image of Azzam.”

— Steve Coll