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Digby asks why we invaded Iraq?

For those of us who feel vindicated by the Downing Street Memo, and there are some of us who do. I remember saying prior to the war there weren't any WMD, and we were being lied to. Stating that we wouldn't find any WMD. Because it just didn't make sense to me that we would find them there; too much evidence pointed to the contrary. So now the question really does become why? We know from Paul O'Neill that the desire to invade Iraq was there from the start of this administration. But why?