Syrian refugee children attend a class in Chekka, northern Lebanon, July 29, 2013. An estimated million Syrians, including refugees, labourers and their families, currently live in Lebanon, twice the number that were here in April. Lebanon, a small and fragile Mediterranean state of 4 million people, is struggling with the burden of such a large and rapid influx. Picture taken July 29, 2013. REUTERS/Mohamed Azakir (LEBANON - Tags: POLITICS CIVIL UNREST SOCIETY) - RTX128EY