I went to see the film “Eye in the Sky” last Friday. It is ostensibly a tense thriller set around a drone attack by Western forces on jihadi terrorists in Kenya.

But the movie, which stars Helen Mirren and Aaron Paul, is more like an extended philosophy test than an escapist night out as you are dragged hither and thither over what is morally right and wrong to accept in the way of human “collateral damage” from a missile attack.

The