ABC News' David Chalian Reports:  As Sen. Hillary Rodham Clinton continues to assess a possible presidential candidacy and the contours of a Democratic nomination fight, she has taken another step away from her 2002 vote authorizing President Bush to attack Iraq by saying that she "wouldn't have voted that way" if she knew everything she knows now.

Clinton has often been asked if she regrets her vote authorizing military action and she usually answers that question with an artful dodge, saying that she accepts responsibility for the vote and suggesting that if the Senate had all the information it has today (no WMD, troubled post-war military planning, etc. . .), there would never have been a vote on the Senate floor.

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