Sudan's civil war has been raging for a year, leading to widespread displacement and a looming famine.
Buthaina, a mother of six, was forced to flee her home in Darfur after running out of supplies and food.
She and her children made a desperate journey to the border with Chad, arriving with no belongings and facing an uncertain future.
The international community is facing a critical challenge in responding to the crisis and providing much-needed aid.
