Some of you may know that I have a brother, Christopher, who disagrees with me about almost everything. Some of those who read his books and articles also know that I exist, though they often dislike me. But in general we inhabit separate worlds – in more ways than one. He is of the Left, lives in the United States and recently became an American citizen. I am of the Right and, after some years in Russia and America, live in the heart of England. Occasionally we clash in public. Family differences: Christopher Hitchens and Peter have disagreed about politics...