South Sudan: The 'forgotten war' where children as young as one face sexual abuse

Mary Atyeng, a Sudanese refugee at the Kiir Adem border crossing with her baby. Picture: Eugene Ikol, Concern Worldwide
Mary Atyeng holds her three-month old baby as she talks, her eyes squinting against South Sudan's harsh 37-degree sun where she sits next to a river marking the border with Sudan.