** FILE ** In this Friday, Jan. 11, 2013, file citizen journalism image provided by Edlib News Network, ENN, which has been authenticated based on its contents and other AP reporting, shows rebels from al Qaeda-affiliated Jabhat al-Nusra waving their brigade flag as they step on the top of a Syrian air force helicopter, at Taftanaz air base that was captured by the rebels, in Idlib province, northern Syria. The Arabic words on the flag reads: "There is no God only God and Mohamad his prophet, Jabhat al-Nusra." (AP Photo/Edlib News Network ENN, File)
** FILE ** Adam Gadahn, the American-born al Qaeda spokesman seen in these undated file photos released by the FBI, called on Muslims serving in the U.S. armed forces to emulate the Army major charged with killing 13 people in Fort Hood. (AP Photo/FBI-released photos, File)
French soldiers patrol around the Louvre museum in Paris, Sunday, Oct. 3, 2010. Saudi intelligence services have warned of a new terror threat from al Qaeda against Europe, particularly in France, French Interior Minister Brice Hortefeux said Sunday, Oct. 17, 2010. (AP Photo/Laurent Cipriani)
**FILE** In this citizen journalism image provided by Edlib News Network and authenticated based on its contents and other AP reporting, rebels from al Qaeda-affiliated Jabhat al-Nusra sit on a truck full of ammunition at Taftanaz air base, which was captured by the rebels, in the Idlib province of northern Syria. (Associated Press/Edlib News Network)
**FILE** In this citizen journalism image provided by Edlib News Network and authenticated based on its contents and other AP reporting, rebels from al Qaeda-affiliated Jabhat al-Nusra sit on a truck full of ammunition at Taftanaz air base, which was captured by the rebels, in the Idlib province of northern Syria. (Associated Press/Edlib News Network)
**FILE** In this citizen journalism image provided by Edlib News Network, which has been authenticated based on its contents and other AP reporting, rebels from al Qaeda-affiliated Jabhat al-Nusra wave their brigade flag on the top of a Syrian air force helicopter on Jan. 11, 2013, at the Taftanaz air base in the Idlib province of northern Syria that was captured by the rebels. (Associated Press/Edlib News Network)
**FILE** In this citizen journalism image provided by Edlib News Network, which has been authenticated based on its contents and other AP reporting, rebels from al Qaeda-affiliated Jabhat al-Nusra wave their brigade flag on Jan. 11, 2013, as they step on the top of a Syrian air force helicopter at a Taftanaz air base in Idlib province in northern Syria that was captured by the rebels. The Arabic words on the flag reads: "There is no God only God and Mohamad his prophet, Jabhat al-Nusra." Al-Nusra is an Islamist extremist group that has been behind some of the rebels' most significant battlefield successes. (Associated Press/Edlib News Network)
** FILE ** This is an undated file photo of al Qaeda leader Osama bin Laden in Afghanistan. (AP Photo, File)
** FILE ** In this Friday, July 20, 2012, file photo, blindfolded and handcuffed suspected al Qaeda members are led away to detention centers in an Iraqi army base in Hillah, Iraq. (AP Photo/ Alaa al-Marjani, File)
