FINALLY. For much of the past week, the White House has been engaged in an aggressive effort to defend the case for war in Iraq. Thus far, it has mainly pointed out the obvious: In the months and years before the invasion, many of those who now accuse the White House of misleading the country to war themselves were making precisely the same claims about the threat from Iraq as the Bush administration.President George W. Bush accused his critics of "rewriting history." Vice President Dick Cheney called the attacks a low point of his three decades in public life. Defense...