One minute Halimo Mohamed, 40, was at home with her children, the next she was on the move, fleeing violence in Somalia's capital, after her Karan neighbourhood, in north Mogadishu, was hit by a barrage of shells, killing dozens and destroying homes, including hers. After dodging militia, struggling to find food and sometimes being forced to walk, she and three of her five children finally arrived on 17 March at Dadaab, a refugee camp in northern Kenya.