Captured Yazidi girls in Iraq are killing themselves to escape rape and torture at the hands of Isis militants holding them prisoner. Hundreds of women and children were captured during the group’s bloody sweep through northern Iraq earlier this year and have since been trafficked as sex slaves , forced into marriage and imprisoned. Victims who managed to escape told Amnesty International that many Yazidi girls killed themselves after losing hope of being saved. A 20-year-old survivor, called Luna, said she was held with 20 girls as young as 10 in the Isis-controlled city of Mosul when they were told to dress up.