The less lucky find work in Dakar or Libya or Algeria or Mauritania, and the least lucky get marooned somewhere along the way—caught in the humiliating twilight of having left home and gained nothing and having nothing to return to. This is creating more and more tempting recruiting targets for jihadist groups such as Boko Haram, which can offer a few hundred dollars a month—a king’s ransom when you are living on two dollars a day.
