One by one, they sit in a row, some of the children holding colorful balloons in their hands. But the simple mattresses and blankets with the UNHCR refugee log gossip that there is no ordinary children's party.

The picture, which SVT News has shared with relatives in Sweden, is in fact taken in the Syrian refugee camp al-Hol. According to the latest UN update last week, the camp houses almost 70,000 people, some of them members of the Islamic State terror group and their families. Of these, 94 percent are women and children, and more than half are children under the age of 12.

"I like you so much"

al-Hol is not the only place where families of foreign IS members are today. This also applies to the children with Swedish parents, a total of about 60, of whom those who have been the longest in the camp have been there for three years. In audio messages to family members, children testify to a desire to come to Sweden.

- Grandma, I'm fine, I want to come to you and to Sweden. I want to eat food and drink juice, says a four-year-old boy in one of the sound clips from a camp.

- I like you so much, I want to come to you.

Aid organizations have asked countries like Sweden to bring back families where the parents went to join IS. The Kurdish-led authorities that run the camps have also demanded that foreign nationals be brought home.

However, persuading countries to fetch suspected terrorists and their families is not easy and it is a politically charged issue. Despite this, several countries announced in November that they were bringing citizens, including Albania, the United Kingdom and a child to Denmark.

Denmark: Parents' fault

Otherwise, Denmark has a restrictive line and Prime Minister Mette Frederiksen said on Tuesday that he does not want to receive more children. Because even though the appeals from within the camps may be strong, it is the parents who bear the responsibility, according to her.

"We, as the government, have made the decision that we do not take the children to Denmark because their parents have turned Denmark back and fought for the Islamic State and thus they have made a choice on their children's behalf," she says according to Danish Ritzau.