Al-Qaeda's leader, Ayman al-Zawahiri, is seen in this still image taken from a video released on Sept. 12, 2011
Edlib News Network ENN / Associated Press
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, as they sit on a truck full of ammunition, at Taftanaz air base, that was captured by the rebels, in Idlib province, northern Syria. Al-Qaida's branch in Iraq said it has merged with Syria's extremist Jabhat al-Nusra, a move that shows the rising confidence of radicals within the Syrian rebel movement and is likely to trigger renewed fears among its international backers. Arabic on the flag, right, reads, "There is no God only God and Mohamad his prophet, Jabhat al-Nusra."
Rafiq Maqbool / AP
Ali Hassan, son of Pakistani mother Aafia Siddiqui, suspected of links to al-Qaeda militants, looks on at Foreign Ministry in Kabul, Afghanistan, Monday, Sept. 15, 2008. Hassan, 12, whose Pakistani mother is on trial in the United States for allegedly assaulting U.S. personnel, was handed to Pakistani officials on Monday
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This framegrab from an undated video released by the US Department of Defense on May 7, 2011, reportedly show Al-Qaeda leader Osama bin Laden making a video at his compound in Abbottabad, Pakistan. According to the Defense Department, the video was seized from the compound during a May 1 operation by US special forces in which bin Laden was killed. = RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / US Department of Defense" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS = (Photo credit should read -/AFP/Getty Images)
AP Photo / IntelCenter / File
This file video frame grab image taken from a video issued by al-Sahab, al-Qaeda's media branch and provided by IntelCenter Wednesday Feb. 27, 2008, shows al-Qaeda's deputy leader Ayman al-Zawahri
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Former Al-Qaeda in the Islamic Maghreb emir Mokhtar Belmokhtar.
AFP / Getty Images
Al-Qaeda leader Ayman al-Zawahiri in a 2006 video recording
REUTERS / Mian Khursheed
Senior al-Qaeda operative Ilyas Kashmiri, regarded as one of the most dangerous militants in the world, was killed by a U.S. drone aircraft missile strike in Pakistan June 4, 2011
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Al-Qaeda operatives and Taliban fighters like Abu Omar are the target of the CIA's drone campaign.
FAROOQ NAEEM / AFP / Getty Images
The hideout of Al-Qaeda leader Osama bin Laden is pictured after his death by U.S. Special Forces in a ground operation in Abbottabad on May 2, 2011.
Al Jazeera / AP
Al-Qaeda leader Osama bin Laden
AFP / Getty
Al-Qaeda leader Osama bin Laden during a new video message.
IntelCenter / AFP
Image released by al-Qaeda in the Islamic Maghreb with a written statement and photos showing a man identified as being British.
Al-Qaeda suspect Ahmed Ibrahim Bilal
JAMES SCHNAPF/GETTY IMAGES
Can al-Qaeda launch cyber-attacks on infrastructure and power grids?
Dozens of al-Qaeda fighters have fled Afghanistan into northern Iraq
Eight suspected al-Qaeda members remain in custody in Spain.
Photograph by Saudi Interior Ministry / Reuters; Photo Treatment by TIME
Saudi national Ibrahim al-Asiri has evolved into al-Qaeda's most inventive bombmaker.
AFP / Getty Images
Al-Qaeda suspects stand behind bars in a special court in Mukalla, Yemen, October 11, 2010. Yemen officials reported that more than inmates, many of them al-Qaeda members, escaped from a prison in Mukalla on June 22, 2011.
IntelCenter / AP
Senior leaders of al-Qaeda in the Arabian Peninsula_from left to right: Abu Hurayrah Qasim al-Reemi, Said al-Shihri, Naser Abdel Karim al-Wahishi, and Abu al-Hareth Muhammad al-Oufi.
Mohamed al-Sayaghi / Reuters
Families of the victims attend a funeral ceremony for Republican Guards killed in a suicide car bomb attack in southern Yemen, at a mosque in Sanaa, Feb. 27, 2012. Al-Qaeda claimed responsibility for the attack that killed at least 26 people outside a presidential palace in southern Yemen on Feb. 25, 2012, hours after Abd-Rabbu Mansour Hadi was sworn in as President.
(R) AFP / Getty ; (L) Antony Njuguna / Reuters
(L) Al-Qaeda leader Osama bin Laden; (R) Somalia President Sheikh Shariff Ahmed
Aamir Qureshi—AFP / Getty Images
Pakistani media personnel and local residents gather outside the hideout of Al-Qaeda leader Osama bin Laden following his death by US Special Forces in a ground operation in Abbottabad on May 3, 2011.
AAMIR QURESHI / AFP / Getty Images
Pakistani media personnel and local residents gather outside the hideout of Al-Qaeda leader Osama bin Laden following his death by U.S. Special Forces in a ground operation in Abbottabad on May 3, 2011.
Enemy Agent: Working for al-Qaeda, Faris, a truck driver from Columbus, Ohio, scoped out the Brooklyn Bridge for a possible attack
The U.S. seeks to connect al-Qaeda and Iraqi weapons acquisitions, such as at this new chemical complex in the northwest
ISSOUF SANOGO / AFP / Getty Images
Nigerian soldiers patrol the road between Agadez and Arlit on Sept. 27, 2010. Gunmen seized seven prisoners, five French nationals, a Togolese and a Madagascan; they are being held by al-Qaeda of the Islamic Maghreb (AQIM)
AFP / Getty
Local Sunni militiamen who decided to fight Al-Qaeda lead a blindfolded suspect whom they arrested during a raid in Um Al-Izam in the Diyala Province.
Mohsin Raza / Reuters
A roadside vendor sells newspapers with headlines about the death of al-Qaeda leader Osama bin Laden, in Lahore, Pakistan on May 3, 2011.
Ben Khemais is suspected of heading al-Qaeda's European logistics operation
Yuri Kozyrev / Noor for TIME
A Sunni militia member surveys the landscape outside Fallujah. The U.S.'s embrace of Sunni tribes has helped chase out al-Qaeda, but Iraq's sectarian tensions still simmer.
Ijaz Muhammad / AP
Some 30,000 Pakistani troops launched a much-awaited ground offensive in the al-Qaeda and Taliban stronghold of South Waziristan on Oct. 17, 2009
Brooks Kraft / Corbis for TIME
Bush must determine whether to approve broader authority to go after al-Qaeda commanders who may know the whereabouts of bin Laden and his deputy, al-Zawahiri.
Mohammed Huwais / AFP / Getty Images
Mansur Shabwani Dalil, left, and Hedi Mubarak al-Saleh, both suspected al-Qaeda members, await trial in a Yemeni court specializing in terrorism on July 4, 2010
Saudi Interior Ministry / Reuters
Ibrahim Hassan al-Asiri, a fugitive Saudi bombmaker who is believed to be working with al-Qaeda's Yemen-based terrorism cell and is a key suspect in the parcel-bomb plot against the U.S.
Abu Qatada, alleged spiritual leader and possible puppet master of al-Qaeda's European networks
Six al-Qaeda suspects were killed when a U.S. missile struck their car in Yemen
DARREN MCCOLLESTER/GETTY IMAGES
ON PATROL: U.S. forces secure an Afghan village in the search for Taliban and al-Qaeda
Site Intelligence Group / AFP / Getty Images
A still image from video obtained on Oct. 26, 2012 courtesy of the Site Intelligence Group showing Al-Qaeda leader Ayman al-Zawahiri speaking from an undisclosed location.
Guillaume Briquet / AFP / Getty Images
Center: A Turkish fighter of the jihadist group Al-Nusra Front, bearing the flag of Al-Qaeda on his jacket, holds position with fellow comrades on April 4, 2013 in the Syrian village of Aziza, on the southern outskirts of Aleppo.
John Mantha / The Canadian Press / AP
In this courtroom sketch, Raed Jaser appears in court in Toronto on Tuesday, April 23, 2013. Jaser, 35, and Chehib Esseghaier, 30, were arrested and charged Monday in what the RCMP said was the first known al-Qaeda terror plot in Canada.
Asif Hassan / AFP / Getty Images
Activists of Jamaat-ud-Dawa offer funeral prayers for Osama bin Laden on a street in Karachi on May 3, 2011. Hundreds of people offered special prayers for Osama bin Laden in the populous Pakistani city of Karachi May 3, where the organisers declared the Al-Qaeda chief as a martyr, police said.
Akhtar Gulfam / EPA
Pakistani paramilitary soldiers detain suspects who crossed into Pakistan from Afghanistan, at Chaman railway station in Chaman, Pakistan, 20 October 2009. Security has been intensified across the country after Pakistani Army began ground offensive against Taliban and al-Qaeda insurgents in the Pakistan's lawless South Waziristan tribal region along the Afghan border.
Balkis Press / Abaca
Osama Bin Laden in an undated al-Qaeda video.
Ammar Awad / Reuters
Antigovernment protesters in Sana'a, Yemen, watch a television broadcast of a report about the death of al-Qaeda leader Osama bin Laden on May 2, 2011
Whitehotpix / ZUMA
Saad bin Laden, son of Osama, was a prominent figure in the relationship between Iran and al-Qaeda
Stringer / EPA
An elderly Yemeni man in Aden, Yemen, after being displaced from the city of Zanjibar following bloody battles between al-Qaeda gunmen and the Yemeni military forces, 13 June 2011.
JAMES HILL/GETTY IMAGES
After rifle training in an al-Qaeda camp, Walker(left) became a Taliban fighter
Intelcenter / AP
This video image shows a man whom analysts believe is Aden Hashi Ayro, the alleged head of al-Qaeda in Somalia, killed in a U.S. military airstrike.
AFP / Getty Images
A crashed U.S. military helicopter is seen near the hideout of al-Qaeda leader Osama bin Laden after a ground operation by U.S. special forces in Abbottabad, Pakistan, on May 2, 2011
Al-Zarqawi has steered al-Qaeda in directions his boss bin Laden probably never intended
Ali Al-Saadi / AFP / Getty Images
Iraqi men read newspapers in Baghdad on May 3, 2011, displaying front-page headlines and photographs in response to the death of al-Qaeda leader Osama bin Laden, a day after he was killed in a U.S. raid at his compound in Pakistan.
AFP / Getty
Yemen's President, Ali Abdullah Saleh, faces sectarian threats and criticism from skeptics who think he's soft on al-Qaeda.
PHOTO BY DAVID MARCK JR.-U.S.ARMY/GETTY IMAGES
Soldiers of the U.S. Army 10th Mountain Division come under fire during Operation Anaconda, the offensive against al-Qaeda and Taliban fighters hiding in Afghanistan's Shah-i-Kot mountains
A Pakistani man sits near a house where al-Qaeda soldiers had been hiding
Marines search for clues on Jan. 1 at an al-Qaeda hideout in Helmand province
Officials tracked a truck bearing potatoes and bombs to an al-Qaeda terrorist nest in Karachi
YURI KOZYREV FOR TIME
AFGHANISTAN: Along a stretch of the Pakistani border crawling with al-Qaeda guerrillas, conservative Waziri tribesmen stop to pray in the direction of Mecca
ON THE TRAIL: Police raid an office related to alleged al-Qaeda member Lionel Dumont in Niigata, Japan
A Northern Alliance soldier reads through papers found in a suspected al-Qaeda compound
Iran's President Mohammed Khatami, right, wants to trade al-Qaeda for better U.S. ties
Mahmoud Al-Badri / Pool / AFP / Getty
Outgoing U.S. Ambassador to Iraq Zalmay Khalilzad gestures as he speaks during a press conference in the heavily fortified Green Zone in Baghdad, March 26, 2007. Khalilzad admitted today that Americans had talked to insurgent-linked groups in a bid to isolate al-Qaeda and bring rebels into the political process to end Iraq's bloodshed.
AFP / Getty
Yemenis in the Radfan district of Lahj protest the government raid that targeted suspected al-Qaeda members
Ahmad Al-Rubaye / AFP / Getty
U.S. Major General William Caldwell, right, speaks during a press conference in Baghdad where it was announced that the U.S. military had killed Al-Qaeda in Iraq's "information minister," identified as Muharib Abdulatif al-Juburi.
AFP / Getty
A split photo depicts the two Austrian tourists, Wolfgang Ebner, left, and Andrea Kloiber, right, who were allegedly kidnapped by an Al-Qaeda group in Tunisia.
AFP / Getty Images
Yemeni army troops take position in the hills overlooking the southern town of Huta on Sept. 27, 2010, three days after regaining control of the town from suspected al-Qaeda militants