" Mohamedou had joined al-Qaeda in 1991 and sworn a loyalty oath to the organization at that time, but that was a very different al-Qaeda, practically an ally of the United States; Mohamedou has always maintained that the fall of the communist government in Afghanistan marked the end of his participation in the organization. "

― Mohamedou Ould Slahi , Guantánamo Diary: Restored Edition