by Kamran Yousaf in The Express Tribune, Sept 11, 2023ISLAMABAD: The main crossing between Pakistan and Afghanistan remained closed on Sunday for the 5th day as talks between the two countries to reopen the border remained inconclusive. The Torkham border crossing was shut on September 6 after an exchange of fire between the Pakistan and Afghan border security forces. The clashes were triggered by the construction of a new post along the border by the…