Omar Suleiman, the longtime former intelligence chief of ousted Egyptian dictator Hosni Mubarak, has died at the age of 76 while undergoing medical treatment in the United States. Suleiman headed Egypt’s intelligence services for more than 18 years and was a close U.S. ally, playing a key role in the Bush administration’s extraordinary rendition program. During the Egyptian uprising last year, Mubarak appointed Suleiman as his first-ever vice president, and Suleiman later tried to run for president after Mubarak’s ouster.