Logar Province, Afghanistan on Saturday, October 29, 2011.

On the way to Balkh Province, Afghanistan on Sunday, June 12, 2011. (S.K.Vemmer/Department of State)

Mazar-e-Sharif, Balkh Province, Afghanistan on Sunday, June 12, 2011. (S.K.Vemmer/Department of State)

Mazar-e-Sharif, Balkh Province, Afghanistan on Sunday, June 12, 2011. (S.K.Vemmer/Department of State)

Logar Province, Afghanistan on Saturday, October 29, 2011.

Logar Province, Afghanistan on Tuesday, May 17, 2011. (S.K. Vemmer/Department of State)

Balkh Province, Afghanistan on Sunday, June 12, 2011. (S.K.Vemmer/Department of State)

The Northern Fertilizer and Power Plant outside of Mazar-e-Sharif, Balkh Province, Afghanistan on Sunday, June 12, 2011. (S.K.Vemmer/Department of State)

The Mazar-e-Sharif power and gas infrastructure in Balkh Province, Afghanistan on Sunday, June 12, 2011. (S.K. Vemmer/Department of State)

Bamyan Province, Afghanistan on Monday, April 25, 2011. (S.K. Vemmer/Department of State)

Panjshir Province, Afghanistan on Thursday, March 31, 2011. (S.K. Vemmer/Department of State)

One of the Towers of Ghazni (Bahlan Shah Minar) in Ghazni, Afghanistan on Wednesday, October 26, 2011.

The minarets in Ghazni, Afghanistan on Wednesday, October 26, 2011. (S.K. Vemmer/Department of State)

An Afghan security outpost sits in the mountains near Daub Pass, in the district of Shinkai, Zabul province, Afghanistan, April 20.

The village of Darvishan rests at the base of a mountain range in northern Khakrez District, Feb. 5, 2011, in Kandahar Province, Afghanistan. District Governor Haji Abdul Qayum Khan and Afghan National Security Forces, along with U.S. servicemembers from Special Operations Task Force South, have assisted the villagers with construction projects and security in the area. (U.S. Army photo by Spc. Daniel P. Shook)(Released).

Parwan Province, Afghanistan, on Wednesday, June 15, 2011. (S.K.Vemmer/Department of State)

The old city and Citadel in Ghazni, Afghanistan on Wednesday, October 26, 2011.

HERAT, Afghanistan--The view of western Afghanistan landscape from a Spanish Army CH-47 Chinook Helicopter during an International Security Assistance Force (ISAF) mission, Sept. 27, 2008. ISAF is assisting the Afghan government in extending and exercising its authority and influence across the country, creating the conditions for stabilization and reconstruction. (ISAF photo by U.S. Air Force TSgt Laura K. Smith)(released)