Thousands of western nationals and vulnerable Afghans to be airlifted out of country as insurgent forces draw ever closer to capital
US troops have begun arriving in Afghanistan to help evacuate thousands of people, including embassy staff, and Afghans and their families who worked for them as a sweeping Taliban offensive draws ever nearer to Kabul.
Diplomats and nationals from a host of western countries are scrambling to leave the capital, with insurgent fighters now camped just 50km (30 miles) away after a campaign that has seen provincial capitals swiftly fall.
