Afghan policemen and U.S. and Afghan soldiers are on alert near the police traffic department building, which was under attack by insurgents in Khost, Afghanistan, on Sunday, May 22, 2011. (AP Photo/Nishanuddin Khan)
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Afghan policemen and U.S. and Afghan soldiers are on alert near the police traffic department building, which was under attack by insurgents in Khost, Afghanistan, on Sunday, May 22, 2011. (AP Photo/Nishanuddin Khan)
