An Afghan soldier stands guard in a street corner in Shindand, district of Herat province, west of Kabul, Afghanistan on Saturday, March 13, 2010. (AP Photo/Reza Shirmohammadi)

U.S. Defense Secretary Robert Gates speaks during a joint press conference with Afghan President Hamid Karzai, unseen, at the presidential palace in Kabul, Afghanistan on Monday, March 8, 2010. (AP Photo/Musadeq Sadeq)

An Afghan employee looks from the shattered window of a damaged building a day after the suicide attacks in Kabul, Afghanistan, Saturday, Feb. 27, 2010. The clean-up in central Kabul began on Saturday after suicide attackers and a car bomb ...

FILE - In this Thursday, Feb. 11, 2010 file photo, Afghan soldiers undergo basic military training following instructions by Turkish officers at the Camp Anadolu military training center in Kabul, Afghanistan. The ongoing operation against the Taliban in Marjah campaign has ...