Your Cheney quote is so out of context the it must either reflect ignorance or a willing lie.
Transcript
From the transcript, it seems clear that Russert did not even blink. This is because Cheney mis-spoke, and Russert knew it. Russert had asked whether Iraq had a nuclear program; earlier in the interview, Cheney had asserted his belief that Saddam had "reconstituted these programs since the Gulf War."
With this response, Cheney managed to substitute "weapons" for "programs," but it is clear from the context what he meant. Later in the show, Cheney also said this: " ... over time, given Saddam’s posture there, given the fact that he has a significant flow of cash as a result of the oil production of Iraq, it’s only a matter of time until he acquires nuclear weapons."
PP