What is ISIS’ appeal for young people?

Children and young people feature in the terrorist group’s propaganda, including a recent video showing boys in camouflage and ISIS bandanas learning hand-to-hand combat. The militants call them their “Cubs of the Caliphate.”

Experts say ISIS has especially ramped up its efforts to lure young women — seen as potential brides for its fighters — into the territory under its brutal control in Syria and Iraq.

But that still leaves the question of why its recruitment drive appears to be proving so successful.

It runs a powerful propaganda machine on social media

“There’s no question what we’re combating with ISIL’s propaganda machine is something we have not seen before,” U.S. State Department spokeswoman Jen Psaki told CNN. “It’s something we need to do a lot more work on. We are seeing 90,000, I think, tweets a day that we’re combating.”

The militants have repeatedly promoted videos using high-level production techniques to celebrate their brutality. A short mash-up clip in September played like a trailer for an action movie, with slow-motion explosions and flames engulfing American troops.

The U.S. government is trying to step up its efforts to counter ISIS propaganda by beefing up a small State Department agency to make it the heart of the fight against the militants’ messaging.

“We’re seeing their approaches continue to evolve,” Psaki told CNN. “We need to continue to make sure ours are evolving and we’re combating it in the most strategic way and using every interagency resource.”

But she acknowledged that the United States still has a lot to do.

“We’re really going to pick it up now,” Psaki said. “We have new people in charge of the office. And we will see what happens over the coming months.”

CNN’s Michael Holmes contributed to this report.

CNN