The report, released by Amnesty International on Thursday night, shows that the Yazidi children abducted by IS have been tortured, forced to fight, raped and abused. Now these children are facing great mental and physical challenges.

The children need support

The most common mental health conditions that these children experience are post-traumatic stress, anxiety and depression, writes the human rights organization. Symptoms and behaviors are often manifested in aggression, flashbacks, nightmares, distancing oneself from social situations and severe mood swings.

"Now these children need urgent support from the national authorities in Iraq and the international community to build their future," said Matt Wells, Amnesty International's crisis adviser in the report. 

It was war or death

Amnesty International describes specific challenges for two groups of surviving children: former child soldiers and girls exposed to sexual violence.

Sahir, who was recruited to IS as a 15-year-old, says in the report that he had no other choice - it was war or death. 

- It was out of my control. To survive, I went into battle. It is the worst thing that can happen to a human being, it is the most degrading thing, he says in the report.

When he then returned from captivity, he was puzzled looking for support. 

- I was looking for someone who said: "I am here for you", but I have never found it, he adds.

"They made me suffer"

The Yazidi girls who have survived sexual violence suffer from a range of health problems, including fistulas, scarring and difficulty conceiving or carrying a child. 

- I was a child when they got me married. They made me suffer. I want my future to be better and I want IS to be held responsible for what they have done to me, says Randa, a 14-year-old girl who was held captive for five years.