If you've ever sat up late wondering if empathy can save the world, I have good news for you. It can. Well, that is according to Robert McNamara, US Secretary of State from 1961 to 1968. In the Academy Award winning documentary The Fog of War: Eleven Lessons from the Life of Robert S. McNamara, the former bigwig in the Kennedy and Johnson administrations - who died last year aged 93 - reveals what he learned about war and foreign policy during his political career. The surprising first lesson is this: 'empathize with your enemy'.