Ashraf Ghani (second from left) stands next to Afghanistan's Chief Executive Abdullah Abdullah (left) and two deputy officials as he takes the oath during the inauguration ceremony at the presidential palace in Kabul on Monday. Ahmad Massoud/Xinhua/Landov hide caption

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A health worker vaccinates a child during a polio campaign in Bannu, Pakistan, June 25. The Taliban threaten to kill vaccinators and parents who immunize their kids. A Majeed/AFP/Getty Images hide caption

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A health worker gives a child the polio vaccine in Bannu, Pakistan, June 25. More than a quarter-million children in Taliban-controlled areas are likely to miss their immunizations. A. Majeed/AFP/Getty Images hide caption

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President Obama, Jani Bergdahl and Bob Bergdahl speak during a news conference in the Rose Garden of the White House in Washington on May 31 about the release of their son, U.S. Army Sgt. Bowe Bergdahl. Carolyn Kaster/AP hide caption

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A sign supporting Army Sgt. Bowe Bergdahl is seen in Hailey, Idaho, on Sunday. Bergdahl, the sole American prisoner of war held in Afghanistan, was flown to a U.S. military hospital in Germany on Sunday after being freed in a swap deal for five Taliban militants who were released from the Guantanamo Bay prison in Cuba. Patrick Sweeney/Reuters /Landov hide caption

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U.S. Army Sgt. Bowe Bergdahl watches in July 2009 as one of his captors displays Bergdahl's identity tag during the first of several videos the Taliban released of the soldier. Reuters/Landov hide caption

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Afghan National Army soldiers stand guard at the main gate of the Parwan Detention Facility Center on the outskirts of Bagram. Afghan authorities released 65 prisoners from there Thursday. Massoud Hossaini/AP 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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