The scramble to airlift tens of thousands of foreign nationals and Afghan allies from Kabul entered a frantic new stage today - with military chiefs admitting they can only continue as long as the Taliban allows it. As desperate British and US citizens, and allies who helped Western forces during the two-decade intervention, try to flee reprisals, armed guards from the Islamist regime have surrounded the capital's airport and seized control of all access points. Underlining the abject humiliation of the West, the Taliban's political chief Mullah Baradar arrived in Kandahar province on Tuesday after 20 years of exile as...