Afghanistan

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US Army soldiers of the 1-320th Alpha Battery, 2nd Brigade of the 101st Airborne Division, over-watch insurgent positions during clashes at COP Nolen, in the volatile Arghandab Valley, Kandahar, Afghanistan, Tuesday, July 27, 2010. (AP Photo/Rodrigo Abd)

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David Kilcullen, Non-Resident Senior Fellow Center for a New American Security, testifies on Capitol Hill in Washington, Tuesday, July 27, 2010, before the Senate Foreign Relations Committee hearing on Afghanistan. (AP Photo/Alex Brandon)

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An Afghan soldier launches a rocket propelled grenade as US soldiers of the 1-320th Alpha Battery, 2nd Brigade of the 101st Airborne Division duck during a clash with insurgents at COP Nolen, in the volatile Arghandab Valley, Kandahar, Afghanistan, Tuesday, July 27, 2010. (AP Photo/Rodrigo Abd)

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Zainab Salbi, Founder and CEO of Women for Women International, testifies on Capitol Hill in Washington Tuesday, July 27, 2010, before the Senate Foreign Relations Committee hearing on Afghanistan. (AP Photo/Alex Brandon)

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Senate Foreign Relations Committee member Sen. Bob Corker, R-Tenn., listens on Capitol Hill in Washington Tuesday, July 27, 2010, during the committee's hearing on Afghanistan. (AP Photo/Alex Brandon)

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Pararescuemen, or "PJs," of the 58th Rescue Squadron deployed to Afghanistan from Nellis Air Force Base, Las Vegas, left to right, Senior Airman Robert Dieguez, 1st Lt. Matthew Carlisle, and Tech. Sgt. Jeff Hedglin, stabilize an Afghan boy with a gunshot wound to the torso, aboard a Pavehawk CASEVAC helicopter en route to a nearby military hospital in Kandahar province, Tuesday July 27, 2010. The PJs and helicopter aircrews are part of the U.S. Air Force's 451st Air Expeditionary Wing based at Kandahar Air Field, which provides a variety of air assets to the NATO war effort in southern Afghanistan. (AP Photo/Brennan Linsley)

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Ryan Crocker, Dean and Executive Professor at the George Bush School of Government and Public Service, right, accompanied by Zainab Salbi, founder and CEO of Women for Women International, center, and David Kilcullen, Non-Resident Senior Fellow Center for a New American Security, testifies on Capitol Hill in Washington Tuesday, July 27, 2010, before the Senate Foreign Relations Committee hearing on Afghanistan. (AP Photo/Alex Brandon)

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The president "needs to do a better job of explaining why" we need to be in Afghanistan, Minnesota Gov. Tim Pawlenty said Monday. (Associated Press)

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Julian Assange, an Australian who launched WikiLeaks four years ago, concedes that even his team hasn't read all the documents about the Afghanistan war released on his website. (Provided by Martina Haris)

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Wikileaks founder Julian Assange speaks during a press conference in London on Monday, July 26, 2010, during which he said he believes there is evidence of war crimes in the thousands of pages of leaked U.S. military documents relating to the war in Afghanistan. (AP Photo/Lizzie Robinson, PA)

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A medic treats a man injured in a passenger bus accident in Kandahar, Afghanistan, on Monday, July 26, 2010. More than two dozen people on board were killed when the speeding bus flipped over, Afghan police said. (AP Photo/Allauddin Khan)

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A United States Marine from Bravo Company of the 1st Battalion of the 2nd Marines is surrounded by Afghan locals during an operation to clear the area of insurgents near Musa Qaleh, in northern Helmand Province, southern Afghanistan, Friday, July 23, 2010. (AP Photo/Kevin Frayer)

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**FILE** In this photo from Jan. 31, 2010, a U.S. Predator drone flies above Kandahar Air Field in southern Afghanistan. (Associated Press)

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United States Marine Lt. Benny Rhodes, right, from Bravo Company of the 1st Battalion of the 2nd Marines leads operations during a gunbattle as part of an operation to clear the area of insurgents near Musa Qaleh, in northern Helmand Province, southern Afghanistan, Friday, July 23, 2010. (AP Photo/Kevin Frayer)

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A United States Marine from Bravo Company of the 1st Battalion of the 2nd Marines eats watermelon as he rests following a gunbattle as part of an operation to clear the area of insurgents near Musa Qaleh, in northern Helmand Province, southern Afghanistan, Friday, July 23, 2010. (AP Photo/Kevin Frayer)

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A United States Marine from Bravo Company of the 1st Battalion of the 2nd Marines carries his weapons and ammunition during an operation to clear the area of insurgents near Musa Qaleh, in northern Helmand Province, southern Afghanistan, Friday, July 23, 2010. (AP Photo/Kevin Frayer)

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A United States Marine from Bravo Company of the 1st Battalion of the 2nd Marines carries his weapons and ammunition during an operation to clear the area of insurgents near Musa Qaleh, in northern Helmand Province, southern Afghanistan, Friday, July 23, 2010. (AP Photo/Kevin Frayer)

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United States Marines from Bravo Company of the 1st Battalion of the 2nd Marines fire machine guns for suppression during a gunbattle as part of an operation to clear the area of insurgents near Musa Qaleh, in northern Helmand Province, southern Afghanistan, Friday, July 23, 2010. (AP Photo/Kevin Frayer)

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