NEW : An ISAF commander offers his `` sincere apologies , '' vows compensation . " The Taliban have been fighting the U.S. and NATO forces for more than a decade. He says the strike hit a building where insurgents -- and civilians -- were . Afghanistan 's president warns the U.S. military and government `` for the last time '' In March , U.S. Defense Secretary Robert Gates offered a personal apology to Afghan President Karzai for the killings of nine boys in a helicopter attack targeting insurgents . Helmand province has been the scene of intense fighting this month .
NEW : An ISAF commander offers his `` sincere apologies , '' vows compensation . " The Taliban have been fighting the U.S. and NATO forces for more than a decade. He says the strike hit a building where insurgents -- and civilians -- were . Afghanistan 's president warns the U.S. military and government `` for the last time '' Helmand province has been the scene of intense fighting this month .