Pakistan on Saturday suspended commercial traffic at the key border crossing with Afghanistan as the two countries enforce rules demanding travel documents. The Torkham border crossing in the north-western province of Khyber Pakhtunkhwa that connects with Afghanistan’s eastern Nangarhar province has been closed for trucks on both sides. “The decision to close the crossing was taken after the Afghan authorities demanded passports and visas from Pakistani truck drivers,” Asad Khan, a spokesperson for the local police told dpa. Drivers for lorries and the larger trucks were allowed to cross the b…