The Washington Post reports: The man was sent to France’s largest prison for armed robbery. He emerged a toughened radical who would go on to take part in the bloodiest terrorist attacks on French soil in decades.

France’s prisons have a reputation as factories for radical Islamists, taking in ordinary criminals and turning them out as far more dangerous people. Here at the Fleury-Merogis prison — where Amedy Coulibaly did time alongside another of the attackers in the deadly assaults this month in and around Paris — authorities are struggling to quell a problem that they say was long threatening to explode.

Former inmates, imams and guards all describe a chaotic scene inside these concrete walls, 15 miles from the elegant boulevards surrounding the Eiffel Tower. Militancy lurks in the shadows, and the best-behaved men are sometimes the most dangerous. French Prime Minister Manuel Valls promised last week to flood his nation’s prisons with 60 more Muslim chaplains, doubling their budget to try to combat radicalization. Authorities this week raided 80 prison cells of suspected radicals, saying they found cellphones, USB drives and other contraband. Hundreds of inmates in French prisons are a potential threat, authorities say.

But critics say that these efforts are minuscule compared with the scope of the problem, with prisons so poorly controlled that a leaked French government report once described Osama bin Laden posters hanging on inmates’ walls. The challenge may be compounded by the dozens of people sent to jail after the recent attacks, some for more than a year, under fast-track proceedings in which they were charged with verbal support for terrorism.

“Prison destroys men,” said Mohamed Boina M’Koubou, an imam who works in the Fleury-Merogis prison. “There are people who are easy targets to spot and make into killers.” [Continue reading…]