Children from southern Somalia fill jugs with water at a refugee camp in Mogadishu Tuesday. The number of people fleeing famine-hit areas of Somalia is likely to rise dramatically and could overwhelm international aid efforts in the Horn of Africa, a U.N. aid official said Tuesday. Farah Abdi Warsameh/AP hide caption

itoggle caption Farah Abdi Warsameh/AP

Sarura Ali (right) covered her eyes from wind-blown dust as she stood with her six children outside a food distribution point in the Dadaab refugee camp in northeastern Kenya on Tuesday (July 5, 2011). Sarura, her husband and their children trekked for eight days from their home in Sakow, Somalia. War and drought are forcing many Somalis to take desperate measures. Roberto Schmidt /AFP/Getty Images hide caption

itoggle caption Roberto Schmidt /AFP/Getty Images