Crisis in Syria spills over into Lebanon, violence continues between rebels and Syrian government forces [GRAPHIC CONTENT]

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The Syrian cities of Aleppo and Homs are under siege as government forces loyal to President Bashar al-Assad try to route out Syrian rebels. Meanwhile, violence has spilled over into Lebanon, one of four neighboring countries, where many refugees have fled to escape the crisis. United Nations investigators have reported that both Syrian government forces and rebels — to varying degrees — have committed war crimes including murder and torture.
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