WorldAfghan firing incident: Karzai says US not co-operating in investigationsNasir KhanMarch 17, 2012March 18, 2012 by Nasir KhanMarch 17, 2012March 18, 2012 Kabul: The Afghan President Hamid Karzai said that United States (US) is not co-operating in the investigation against the US soldier involved in the massacre...