He said for years that they had plenty of banned weapons. 400K and a directorial debut later, he changed his mind 180 degrees. Overnight.
The fact that we haven't found anything should worry you, not make you feel vindicated. It's a documented fact that these weapons existed, by all accounts, including Ritter's up to 1998. To date, there has been not a shred of evidence pointing to the destruction of these weapons. Nothing.
So where are they?