The new US secretary of defense travels the American world, to Kabul and Baghdad in particular, where he frets about Tehran - only to find himself confronting the consequences of the misdeeds of his younger self. In the first two parts of this three-part series, Roger Morris covered the world and spy agency that "made Bob". Now, he turns to the world that Bob made. It's a tale of terror bombs and secret plots, of internecine warfare within the CIA and in the Hindu Kush.
Part 2: Great games and famous victories