>> Born in the so called Islamic State, Ali and Sara legally dont exists. They're part of a generation of hundreds of stateless children born into war. The family may have escaped militant rule in northern Iraq, but they now face a new challenge, proving the children's identity. Reuters' Iraq correspondent Stephen Kalin is at Debaga refugee camp, southeast of Mosul.
>> People are coming without documents, without their identification. And some people lost their documents along the way. But the main problem that we're seeing is, children that were born during the past two years in areas controlled by Islamic State, often, their births were not registered. So they don't have proof of birth.
> How can I prove this boy is my son, says this refugee. He has no ID, no papers, no pictures. According to the UN, stateless children risk missing out on basic rights, such as education and healthcare. The problem can follow them into adulthood making it hard to get a job and exposing them to abuse and even trafficking.
>> The birth certificates issued by ISIS have a stamp, have an ISIS stamp on them. And when people fled from Mosul and other areas, they told us that they were tearing up those documents because they were worried about having any sort of connection to ISIS when they came back to government territory.
>> But the problem is not just in Iraq. The 5 year old civil war in neighboring Syria has uprooted 10 million people, an even greater number of children there are going undocumented.