In the end, the Saigon moment happened faster than any Western intel “expert” expected. This is one for the annals: four frantic days that wrapped up the most astonishing guerrilla blitzkrieg of recent times. Afghan-style: lots of persuasion, lots of tribal deals, zero columns of tanks, minimal loss of blood. August 12 set the scene, with the nearly simultaneous capture of Ghazni, Kandahar and Herat. On August 13, the Taliban were only 50 kilometers from Kabul. August 14 started with the siege of Maidan Shahr, the gateway to Kabul. Ismail Khan, the legendary elder Lion of Herat, struck a self-preservation...