DREW HINSHAW:

One boy I talked to who is in the story, kind of put it succinctly, Boko Haram, they expect to be martyrs. Many of the adults are expected to die in battle and they expect to achieve martyrdom, and they're looking for a new generation to keep their project going after they die in battle.

And I would add that in some ways, they are successful with some of these boys. Obviously, the ones we talked to are the ones that escaped, the ones who said we've had enough.

But all of them, without exception, said that if you go to those camps, most of people there are genuine believers and they're really converted.