The official said the intent now is to `` make it more precise and understandable by the most junior member of the force . '' Afghanistan commander in Afghanistan expresses regret over Afghan Interior Ministry airstrike . Gen. McChrystal says `` extremely saddened by tragic loss of innocent lives '' 27 civilians died , 14 wounded in attack , ISAF says . U.S. calls attack `` unjustifiable '' ; NATO launches investigation .
Afghanistan commander in Afghanistan expresses regret over Afghan Interior Ministry airstrike . Gen. McChrystal says `` extremely saddened by tragic loss of innocent lives '' 27 civilians died , 14 wounded in attack , ISAF says . U.S. calls attack `` unjustifiable '' ; NATO launches investigation .