About 400,000 Syrians have registered as refugees across Lebanon, according to the United Nations, but many more are undocumented.
Syrian Refugees in Lebanon
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Refugees at a temporary camp in Marj, Lebanon, Jan. 7, 2013.
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A Syrian refugee washes dishes at a camp in Tyre, Lebanon, Jan. 31, 2013.
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Syrian children play with toy weapons at a refugee camp in the southern port city of Sidon, Lebanon, Oct. 27, 2012 during the Eid Al-Adha holiday.
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Refugees register their names after their arrival at the Al Zaatri refugee camp near the border with Syria, March 6, 2013.