IMO, that conclusion is subject to (valid) debate. But I agree that there should be concern about where all these "non-existant" WMD components and prohibited material are going.

What I do not understand is how those people who say it did not exist are now saying that it is spreading uncontrolably due to the attack:

IF it did not exist, it cannot go anywhere

IF it did exist, the US was justified in attacking Iraq, IMO.

So what is it to be?