Somali children stand outside a mosque at the start of Friday prayers in a refugee camp outside Dadaab, eastern Kenya, 100 kms (60 miles) from the Somali border, Friday Aug. 5, 2011.   The drought and famine in the horn of Africa has  killed more than 29,000 children under the age of 5 in the last 90 days in southern Somalia alone, according to U.S. estimates. The U.N. says 640,000 Somali children are acutely malnourished, suggesting the death toll of small children will rise. (AP Photo/Jerome Delay)