Islamic State's Brutal Sexual Crimes Revealed By UN, Including Burning Woman For Refusing 'Extreme Sex Act'

Islamic State (IS) reportedly burned alive a young woman for refusing to take part in an "extreme sex act," it has been claimed.

The violent extent of the Islamic State's shocking war crimes have been revealed by a UN worker, Zainab Bangura, with refugees speaking of the terrifying and abhorrent treatment of women in IS-held areas of the Middle East, with young virgins being bought and sold at auction by wealthy sheikhs.

Bangura said the woman burned alive was Zuhour Kati, 20.

Watch :A Student Standing Up to Debate ISIS With Bush

19-year-old student Ivy Ziedrich confronts Republican leader Jeb Bush on Islamic State. (A grab of an ABC video uplinked on Youtube by Lund Peterson)

RENO:  On Wednesday afternoon, just as she sat down to watch TV and eat a corn dog, Ivy Ziedrich's phone rang. It was her sister in Montana.

"I am so proud of you," her sister said, "for yelling at a politician."