Last May, someone sat down at an IBM desktop here and typed out a polite letter to a bitter foe of al-Qaida, the anti-Taliban leader Ahmed Shah Massoud. The writer tapped at the computer for 97 minutes, according to its internal record, then printed out the fruit of his labor: a request for an interview with Massoud, to be conducted by “one of our best journalists, Mr. Karim Touzani.” ON SEPT. 9, two men posing as journalists, one carrying a passport in the name of Karim Touzani, detonated a hidden bomb as they interviewed Massoud. The legendary Afghan commander was ...