Afghan migrants rest while waiting for transport by smugglers after crossing the Iran-Turkish border on August 15, 2021 in Tatvan, on the western shores of Lake Van, eastern Turkey. - The latest chaos in Afghanistan sparked by the recent gains of territory by the Taliban including the takeover of the capital Kabul has raised fresh alarm over an influx of migrants into Turkey through the Iranian border. Turkey, which shares a 534 kilometre (331 miles) border with Iran, has beefed up its frontier and started building a 243 kilometre wall in a bid to prevent any passage of illegal migrants. (Photo by Ozan KOSE / AFP) (Photo by OZAN KOSE/AFP via Getty Images)