Frank Rich: When people one day look back at the remarkable implosion of the Hillary Clinton campaign, they may notice that it both began and ended in the long dark shadow of Iraq. It's not just that her candidacy's central premise -- the priceless value of "experience" -- was fatally poisoned from the start by her still ill-explained vote to authorize the fiasco. Senator Clinton then compounded that 2002 misjudgment by pursuing a 2008 campaign strategy that uncannily mimicked the disastrous Bush Iraq war plan. After promising a cakewalk to the nomination -- "It will be me," Mrs. Clinton told Katie Couric in November -- she was routed by an insurgency.
