The first part.
Now, after we invaded in '03 and couldn't find the WMDs they started lying. Absolutely. But the basis for the war was incompetence.
Russia, France, and Germany seem to have much better intel, but we don't like listening to them. This seems to cross administration lines so it's not quite clear what the problem is (although that doesn't prevent a lot of speculation).
At what point does any sovereign nation that we disagree with become a threat because they have traditional munitions that we consider a WMD? At what point does having a 5gal gas can and a road flare in the back of a truck become a WMD... When ever enough of the public can be convinced of the new definition.