On May 8, the trial of Tunisian Nizar Trabelsi, accused of planning an attack in Europe, opened in Washington, for eight to ten weeks. A figure of al-Qaeda a quarter of a century ago, at the heart of a judicial scandal in Belgium from which he was extradited in 2013.

These three alone symbolize today the variable geometry destinies of the former worshippers of Osama bin Laden, and the puzzle of managing veterans who look like gurus or martyrs.