by Kamran Yousaf in The Express tribune, Sept17, 2023ISLAMABAD: The main border crossing between Pakistan and Afghanistan reopened on Friday, following an eight-day closure. However, the underlying tensions between the neighbouring nations are far from over. Official sources revealed to The Express Tribune on Saturday that the root cause of the ongoing tensions between Pakistan and Afghanistan is the lack of action against the banned Tehreek-e-Taliban Pakistan (TTP). The Torkham border crossing was abruptly shut…