Afghan attack kills US troops

An Afghan soldier turned his gun on American troops at a checkpoint in the country's east, killing two Americans and at least two fellow members of Afghanistan's army in a shooting that marked both the continuance of a disturbing trend of insider attacks and the 2,000th U.S. troop death in the long-running war. (AP)

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Afghans burn the U.S. flag in Ghanikhel district of Nangarhar province, east of Kabul, Afghanistan, Friday, Sept. 14, 2012 during a protest against an anti-Islam film which depicts the Prophet Muhammad as a fraud, a womanizer and a madman. (AP Photo/Rahmat Gul)
Afghans burn the U.S. flag in Ghanikhel district of Nangarhar province, east of Kabul, Afghanistan, Friday, Sept. 14, 2012 during a protest against an anti-Islam film which depicts the Prophet Muhammad as a fraud, a womanizer and a madman. (AP Photo/Rahmat Gul)