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People gather on October 4, 2012, in front of the house where five people were killed after a mortar fired from Syria crashed inside the Turkish border town of Akcakale on October 3, killing five civilians, including a mother and her three children. AFP PHOTO/MIGUEL MEDINA (Photo credit should read MIGUEL MEDINA/AFP/GettyImages)
People gather on October 4, 2012, in front of the house where five people were killed after a mortar fired from Syria crashed inside the Turkish border town of Akcakale on October 3, killing five civilians, including a mother and her three children. AFP PHOTO/MIGUEL MEDINA (Photo credit should read MIGUEL MEDINA/AFP/GettyImages)

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    Turkish shells rain on Syria

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Turkish shells rain on Syria

Turkish military responds with an artillery salvo on targets inside Syria. CNN's Ivan Watson reports.

Turkish shells rain on Syria

Turkish military responds with an artillery salvo on targets inside Syria. CNN's Ivan Watson reports.