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Caption:Islamic fighters from the al-Qaida group in the Levant, Al-Nusra Front, wave their movement's flag as they parade at the Yarmuk Palestinian refugee camp, south of Damascus, to denounce Israels military offensive on the Gaza Strip, on July 28, 2014. Israeli shells struck a UN school in Gaza early today, killing 16, as ground troops made a signficant push into the territory despite Palestinian efforts to broker a 24-hour truce. AFP PHOTO/RAMI AL-SAYED (Photo credit should read RAMI AL-SAYED/AFP/Getty Images)
Caption:Islamic fighters from the al-Qaida group in the Levant, Al-Nusra Front, wave their movement's flag as they parade at the Yarmuk Palestinian refugee camp, south of Damascus, to denounce Israels military offensive on the Gaza Strip, on July 28, 2014. Israeli shells struck a UN school in Gaza early today, killing 16, as ground troops made a signficant push into the territory despite Palestinian efforts to broker a 24-hour truce. AFP PHOTO/RAMI AL-SAYED (Photo credit should read RAMI AL-SAYED/AFP/Getty Images)

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    Pentagon: Top al Qaeda leader killed in airstrike

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Pentagon: Top al Qaeda leader killed in airstrike

Sanafi al-Nasr, the leader of al Qaeda-linked group Khorasan, was killed in an airstrike in Syria, according to U.S. officials. CNN's Nick Paton Walsh reports.

Pentagon: Top al Qaeda leader killed in airstrike

Sanafi al-Nasr, the leader of al Qaeda-linked group Khorasan, was killed in an airstrike in Syria, according to U.S. officials. CNN's Nick Paton Walsh reports.