> Do we have reason to believe that the government knew there were no WMDs?
Yes; many of the specific bases of support they pointed to had been debunked before they were publicized by, among others, UN weapons inspectors. While it's far from proof, that alone is reason to believe that they were knowingly fabricating their claims.
Would you be able to link to a source about the UN weapons inspectors or something similar? All I have is pretty much hearsay and I was young enough when the towers fell that I understood "bad guys did it" but not much more.
I wish I could find a TV interview with a German inspector I watched back then. They got some super secret leads from the CIA, went to the locations and never found anything. The response from the US was to cut them off from information and shout even louder that they had all this bullet-proof information.
I don't know if Bush and friends really believed their claims but if you looked at it from a neutral point of view it was very clear that they had made up their minds to invade Iraq and desperately tried and failed to find evidence.
Yes; many of the specific bases of support they pointed to had been debunked before they were publicized by, among others, UN weapons inspectors. While it's far from proof, that alone is reason to believe that they were knowingly fabricating their claims.