How a colonial blunder grew into a part of the War on Terror | Aeon Essays: The Durand Line has consistently proven ineffective as the basis of territorial delineation between Afghanistan and Pakistan, its division of Pashtun tribal lands a point of contention to this day. As recently as May 2016, the portion of the line between Afghanistan and Pakistan at the Torkham checkpoint was shut down, stranding thousands of people and cargo trucks. Pakistani military forces installed barbed wire; Afghanistan, which does not recognise the legitimacy of the border, responded to this as a hostile act. Escalating tensions, well-known to either side, led to a shutdown of the Torkham border post. It was only after high level diplomatic meetings that the post could be opened again.