yazidi slaves
The Islamic State is using many for sexual slavery or forcing them to fight for the militant group, investigators say.
Investigators say the extremist group is holding at least 3,200 women and children captive.
Fighters reportedly ensure women don't become pregnant by using oral and injectable contraception.
“There are millions of traumatized people in our country, and the need is bigger than what we can do."
WHAT'S HAPPENING
Yazidi girls share insight about the American aid worker's time in captivity.