Richard Clarke, the former White House counterterrorism czar in four successive administrations, testifies in front of the 9/11 Commission on Wednesday. But what should have been a serious inquiry into how a loosely knit gang of Islamic fanatics could rise to become one of history's most lethal and effective global terrorist organizations now promises to become a political spectacle. At the height of the presidential campaign season, Clarke has made irresponsible and untrue allegations that the Bush White House was indifferent to the threat posed by al Qaeda in the months leading up to the 9/11 attacks. Whether his charges...