'With large questions of right and wrong, there is a division of labour. So, with the attack on three subway trains and a bus in London on July 7, 2005. Of what moral relevance, if any, was the fact that the British army had been engaged in the killing of greatly more of a people with whom the terrorists identified? Of what relevance, as a newspaper article asked a week later, was the fact that the British prime minister put his own people at risk...