NEAR MOSUL, Iraq — Muhaiman was only 9 years old when militants from the Islamic State of Iraq and Syria (ISIS) overran Mosul, the second-largest city in Iraq, in 2014. He found himself trapped, terrified and separated from his mother.
He said he thought he’d never see her again.
“I thought that I was already dead,” he said. “During the fighting there was bombing right next to us and our neighbors were killed.”
He and his family were among the tens of thousands who fled when ISIS first invaded. But when his father Qassim decided to risk going back to Mosul to grab some belongings, Muhaiman begged to join him.
That decision proved to be a dreadful mistake. When Muhaiman and his father tried to leave, they found that ISIS had cut off all escape routes out of the city. 
“They raided our home,” Muhaiman remembers. “They took my video game and threw it out …