Sudan has been ravaged by war for a year, leaving millions displaced and facing starvation.
Buthaina, a mother of six, fled her home in el-Fasher, Darfur, after running out of food and water.
She and her children journeyed hundreds of miles to the border with Chad, arriving with nothing but the clothes on their backs.
The conflict has caused a humanitarian crisis, prompting desperate appeals for international aid to prevent a devastating famine.
