Soldiers in the Afghan National Army's 6th Kandak (battalion), 3rd company, search a local farmer's poppy field during a joint patrol with U.S. forces in Kandahar province in March of last year. Andrew Burton/Getty Images hide caption

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An Afghan security officer runs toward the scene of Friday's bombing in Kabul. Three NATO personnel were killed and at least six Afghan civilians were wounded. Omar Sobhani /Reuters /Landov hide caption

itoggle caption Omar Sobhani /Reuters /Landov

Secretary of Defense Chuck Hagel attends the International Institute for Strategic Studies Regional Security Summit in the Bahraini capital Manama on Saturday. Mohammed Al-Shaikh /AFP/Getty Images hide caption

itoggle caption Mohammed Al-Shaikh /AFP/Getty Images

An Afghan man rides a horse at sunset on Nadir Khan hill in Kabul, Afghanistan. Auliya Atrafi paid thousands of dollars and risked his life to escape the Taliban-controlled country, only to return after 12 years living in England. Rahmat Gul/AP hide caption

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Afghan President Hamid Karzai addresses the Loya Jirga on Sunday. Karzai expressed anger at an airstrike Thursday that killed a child, saying it could imperil a security agreement with the U.S. The U.S.-led international force apologized on Friday for the killing. Massoud Hossaini/AFP/Getty Images hide caption

itoggle caption Massoud Hossaini/AFP/Getty Images

Afghan President Hamid Karzai attends the Loya Jirga, or grand assembly, in Kabul on Sunday. The assembly approved a deal that would allow the U.S. to keep troops in Afghanistan beyond 2014. But Karzai has not yet agreed to sign the deal. Rahmat Gul/AP hide caption

itoggle caption Rahmat Gul/AP

Afghan delegates to the Loya Jirga, or grand assembly, listen to Afghan President Hamid Karzai on Thursday. Some 2,500 elders and community leaders have gathered in Kabul to discuss a U.S.-Afghan security agreement that would define the role of U.S. troops after the combat mission ends next year. S. Sabawoon/EPA/Landov hide caption

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A member of the Afghan Loya Jirga listens as the more than 2,000 elders begin debating a proposed U.S.-Afghan security pact on Thursday in Kabul. Massoud Hossaini /AFP/Getty Images hide caption

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An Afghan soldier stands guard in the western city of Herat in October. U.S. Maj. Gen. James McConville, who commands coalition forces in eastern Afghanistan, says Afghan forces did hold their ground this year, but "they're not winning by enough that the enemy is willing to stop fighting yet." Aref Karimi/AFP/Getty Images hide caption

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