Some of the children are foreigners whose parents brought them to be raised under Islamic State rule, or child fighters conscripted into what the group dubbed "cubs of the caliphate."

The U.S.-led coalition recaptured much land, including several key cities in Iraq, before Trump took office.

While Baghdad may be basking in its battlefield success for now, relying on military might will not be enough in the longer term.

ISIS is losing control of its territory and bleeding financially. Despite the loss, many experts are warning attacks in the West could actually increase.

The Islamic State group is hemorrhaging money with every piece of territory it loses, according to a new analysis that found that the group's "business model" is on the path to failure.

As the battle for Mosul, ISIS' largest stronghold in Iraq, the Islamic State group is being denied access to revenue sources such as oil and gas.