Gordon Brown must surely have had what senior ministers call "one of his little moments" last Thursday when George W Bush was asked about Tony Blair's departure date. "My attitude is," Mr Bush said, gazing fondly at the Prime Minister, "I want him to be here so long as I'm the President." That would give Mr Blair till noon on January 20, 2009 (teatime in Downing Street, allowing for the time difference). "Well, what more can I say?" said the Prime Minister, with one of his 1,000-watt grins. To which the Chancellor doubtless growled inwardly: "Say you're going tomorrow, you...