Changing ones position as circumstances change does not make you untrustworthy. Kerry has made it clear that before he would have sent us to war, he would have at the very least, attempted to get a more collaberative approach with the rest of the world. Whether he would have been successful or not remains to be seen, but Bush's inability to be a diplomat is a huge liability to the US. If Kerry had been president, there wouldn't have been this rush to war with Iraq.

Bush has damaged US credibility, is not a good communicator and is unable to repair that damage and we need to go in a new direction.