Iraq Question

Now, even though I am not convinced that we will know the whole truth for another decade or so, it appears that we have not found the WMD that almost everyone in the world thought we would find. I have a question along those lines. It was also widely believed that Saddam had killed over a million, if not more, of his own people. We have found some mass graves, but I seem to remember that early reporting over-counted the number of dead in those graves. My question is: have we found verifiable proof of millions of dead at the hand of Saddam? Does anyone know the answer to this?