On the afternoon of Wednesday, April 9, I watched Saddam's statue lurch sideways, and my fingers itched to pick up the phone. But I didn't give in to the temptation. For the past few weeks, my Left-wing friends and I have operated a non-aggression pact, organised around a simple rule: don't mention the war. This is not out of respect for each other's views. It's because we don't want the police to be called. It was at a dinner party, inevitably, that the friendship-wrecking potential of the Iraq conflict really sank in. I have known Gregory since the 1980s; he...