It's quite possible that a man CAN be a credible witness on political events and CAN expose political lies...and may STILL be someone who has a weakness for something like child pornography.

The one does not serve as an automatic cancellation of the other.

If Scott Ritter was right in his testimony about Iraq and the Bush administration, it is completely irrelevant whether or not he has character flaws in some other private area of his life.

And it's also possible that they framed him.