Newly arrived Somali refugees sit in the open as they await medical examinations for their children at the Dadaab refugee camp, near the Kenya-Somalia border, July 23, 2011. Aid agencies are unable to reach more than two million Somalis facing starvation in the famine-struck Horn of Africa country where Islamist insurgents control much of the worst-hit areas, the U.N.'s food agency said on Saturday. REUTERS/Kabir Dhanji (KENYA - Tags: SOCIETY CIVIL UNREST)