Last week Saif al-Islam Gaddafi, the son and onetime heir apparent of the former dictator Muammar Gaddafi, appeared in the southern desert city of Sebha. A furtive, uneasy, and aged Gaddafi, who had been missing for several years, was dressed in robes that mirrored his father’s trademark look and if you squinted, it almost looked like Gaddafi himself had risen from his unmarked Saharan grave.