NEW : NATO force expects no impact on ability to carry out operations . On Tuesday , as many as 60 to 70 armed militants launched back-to-back assaults on convoys . Pakistan suspends convoys into Afghanistan through key mountain pass . Comment: Militants seized U.S. humvees , food aid in ambush earlier this week .
NEW : NATO force expects no impact on ability to carry out operations . Pakistan suspends convoys into Afghanistan through key mountain pass . Comment: Militants seized U.S. humvees , food aid in ambush earlier this week .