Many thousands of children of foreign Islamic State fighters travelled with them to conflict areas such as Syria and Iraq, or were born there. Now these children and their families face considerable legal and logistical challenges. They are unable to access basic services, or return to their countries of origin, especially if an adult in the family has been deprived of citizenship.
With many countries refusing or delaying efforts to repatriate, these children are in a particularly precarious situation.
An ongoing Dutch case, brought on behalf of 23 women and 56 children by a team of lawyers, shines a probing light on these issues. The central question of whether or not the decision to repatriate is a political choice will be watched closely by other countries.