KABUL, Afghanistan (AP) -- U.S. military leaders say it's too soon to tell if Pakistan's offensive against militants in North Waziristan has been effective or simply symbolic.
But they say the operations have temporarily disrupted the enemy and sent insurgents fleeing into Afghanistan.
Marine Gen. Joseph Dunford stepped down Tuesday as top U.S. commander in Afghanistan. He says there's no doubt that some fighters escaped across the border, along with displaced civilians trying to get away from the violence.
Frustrated U.S. officials have long pressed Pakistan to move into North Waziristan, which has been a safe haven for militants including the al-Qaida linked Haqqani network. The Haqqanis used the region as a base to launch attacks against U.S., Afghan and coalition troops across the border in Afghanistan.