Military operation kills 17 civilians , including militants , U.S. confirmed . NATO offers condolences , helps identify victims . ` Our inquiry in Herat demonstrates how seriously we take our responsibility in conducting operations against militant targets and the occurrence of noncombatant casualties , '' Ryan said . Weapons and ammunition recovered at site of attack . Afghan president has expressed dismay , especially over civilian casualties .
Military operation kills 17 civilians , including militants , U.S. confirmed . NATO offers condolences , helps identify victims . Weapons and ammunition recovered at site of attack . Afghan president has expressed dismay , especially over civilian casualties .