ISIS understands that to continue their agenda they must focus their attentions on the “next generation” which is the children of foreign fighters living in Isis territory in Syria and Iraq that are being trained to become the “next generation” of terrorists.  ISIS  promotes its use of children as fighters and suicide bombers, and even goes as far as featuring children, including a four-year-old British boy, as executioners in its gory propaganda videos.

Excerpt From The Telegraph:
There are concerns the number of young kids forced into Isis ranks will increase as young children taken to live in its territories or born to “jihadi brides” grow up. In its annual report on terrorism in the European Union, Europol said children raised under the group’s rule are of “particular concern.”“In their propaganda, Isis has often shown that they train these minors to become the next generation of foreign terrorist fighters, which may pose a future security threat to member states,” the Europol report said.