Rebel fighters and security forces in Syria clashed near the border with Lebanon and fought over a military barracks in Aleppo on Sunday, while Turkish artillery fired into Syria for a fifth consecutive day in retaliation for cross-border shelling. On Sunday morning, Syrian forces shelled Tal Abyad, a Syrian border town where rebels recently seized control, according to antigovernment activists. Video images posted online purported to show women and children fleeing the area.
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