Mohamed Hassan, a four-year-old malnourished male refugee from Kansah village in Somalia, rests at the Medecins Sans Frontieres (MSF) stabilization centre in Melka Dida, about 75 km (47 miles) from Dolo Ado, near the Ethiopia-Somalia border August 12, 2011. The U.N. refugee agency and a government agency have established four camps along the Ethiopian border with Somalia to accommodate a refugee population that now exceeds 120,000 most of whom are victims of drought and famine; the worst in decades, and has affected about 12 million people across the Horn of Africa. REUTERS/Thomas Mukoya (ETHIOPIA - Tags: DISASTER ENVIRONMENT SOCIETY IMAGES OF THE DAY)