Sufyan Ben Qumu was classified as a 'medium to high' national security risk before his release from American custody Qumu reportedly was Osama bin Laden's driver and worked for the al-Qaeda founder's company in Sudan Libyans promised to keep him behind bars, but he was released in 2010 Qumu was a former Libyan army tank driver and became a leader of the rebels during the uprising A former al-Qaeda terrorist released from Guantanamo Bay is believed to be the leader of the attack on the US consulate in Benghazi, Libya, that killed four Americans, including the US Ambassador, it was...