Pakistan's closure of a key supply line for NATO-led troops fighting in Afghanistan, and militant attacks on tankers on a second route are not hurting the military effort in Afghanistan, a NATO spokesman said on Thursday. Brigadier-General Josef Blotz, spokesman for the NATO-led International Security Assistance Force (ISAF) said a return to normal operations along both routes could be "closer" after the publication of a joint probe into a cross-border attack by U.S. helicopters that led to the border closure. "The ISAF operations here within Afghanistan, are not impeded at all by these incidents," Blotz said. "We do expect that with the closure of the assessment...we are closer to a resolution of all the problems."