Nothing is in vain. Imagine if we had not gone against Iraq...we would have to face Iran+one...So, we should applaud the leaders who took a stance then (Blair, Bush) and hold responsible (some of the press and others... who negated the obvious and provoked the agrandisement of these monsters-fanatics-etc
Either you have a WMD free zone or you do not. In the end a success in iraq alone is not a success if iran acquires wmds.