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Photo by: Qazi Rauf

A Pakistani border guard stands near Afghanistan-bound NATO trucks parked on the roadside in Pakistani tribal area of Khyber on Friday, Oct. 1, 2010. Pakistan closed the Khyber Pass supply route for U.S. and NATO troops in Afghanistan on Thursday after a coalition helicopter attack mistakenly killed three Pakistani soldiers at a border post, raising tensions in a vital relationship for both Islamabad and Washington. (AP Photo/Qazi Rauf)

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