Officials and mourners prepare to place the coffin of Afghanistan High Peace Council and former Taliban leader Arsala Rahmani in a grave earlier today, in Kabul. Massoud Hossaini /AFP/Getty Images hide caption

itoggle caption Massoud Hossaini /AFP/Getty Images

Former Taliban fighters displayed their weapons as they joined Afghan government forces during a ceremony in Herat province last Wednesday ( May 2, 2012). Aref Karimi/AFP/Getty Images hide caption

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Oct. 7, 2001: President George W. Bush poses for a photo in the Treaty Room of the White House after announcing airstrikes on on Afghanistan.

Hillery Smith Garrison/AP hide caption

itoggle caption Hillery Smith Garrison/AP

In this archive photo from October 21, 2001, Jalaluddin Haqqani smiles as he leaves after a meeting with Jama"at-i-Islami leaders in Islamabad, Pakistan.

Visual News/Getty Images hide caption

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Undated photo reportedly showing Taliban leader Mullah Omar. AP hide caption

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Lt. Gen. William Caldwell (Feb. 27, 2011 file photo). U.S. Navy Petty Officer 2nd Class Ernesto Hernandez Fonte /AP hide caption

itoggle caption U.S. Navy Petty Officer 2nd Class Ernesto Hernandez Fonte /AP

Secretary of Defense Robert Gates. Alex Brandon/AP hide caption

itoggle caption Alex Brandon/AP

A girl stands in the middle of a poppy field as Marines pass by on patrol. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR