Before we invaded Iraq, Saddam Hussein repeated claimed that he had no weapons of mass destruction. Dubya's crew denounced this as a campaign of lies, invaded, and found no weapons.

Donald Rumsfeld is on the op-ed page of the New York Times today, continuing to claim that we had to invade because Hussein had rejected Dubya's invitation to disarm and -- weasel word alert -- "prove he had done so". It's a short piece, so he doesn't have time to explain what, beyond the thousands of pages of documentation he submitted and allowing UN inspectors free run of the country for months, would have constituted an acceptable standard of proof.