US army soldiers are pictured in their b

US army soldiers are pictured in their barracks after a Taliban attack on US air base in Bagram, 50 kms north of Kabul, on May 19, 2010. Taliban militants armed with rockets, guns and grenades attacked the largest NATO base in Afghanistan on May 19, sparking gun battles that killed seven insurgents and wounded seven NATO soldiers. The daring assault on Bagram airbase came a day after a suicide car bombing killed five US soldiers, a Canadian colonel and 12 Afghans, highlighting the increasing sophistication and relentless pace of the nearly nine-year insurgency. AFP PHOTO MASSOUD HOSSAINI (Photo credit should read MASSOUD HOSSAINI/AFP via Getty Images)