AL GORE'S ENDORSEMENT of Howard Dean was anything but polite. A more diplomatic politician would have praised Dean's major rivals for the Democratic presidential nomination--Dick Gephardt, Joe Lieberman, John Kerry, John Edwards, Wesley Clark--as esteemed colleagues and said they were all capable of being president (including one selected by Gore himself as his 2000 running mate). Instead the former vice president dismissed the whole bunch as "great candidates." "Only one" candidate for the 2004 nomination, said Gore, had stepped forward as he had and come out early, loudly, and extravagantly against President Bush's decision to invade Iraq. "Our...