The Shiny new VP elect on April 29, 2007:

Well, the point is, it turned out they didn't (have WMDs), but everyone in the world thought he had them. The weapons inspectors said he had them. He catalogued—they catalogued them. This was not some, some Cheney, you know, pipe dream. This was, in fact, catalogued. They looked at them and catalogued. What he did with them, who knows? The real mystery is, if he, if he didn't have any of them left, why didn't he say so? Well, a lot of people say if he had said that, he would've, you know, emboldened Iran and so on and so forth.
But the point was, we were talking then about whether or not we could keep the pressure of the international community on Iraq to stay in the box we had them in. And remember, you had the French and others say the reason all those children were dying in Iraq, the reason why hospitals didn't have equipment is because of what we, the United States, were doing, imposing on Iraq these sanctions. And that was the battle. The battle was do we lift these sanctions or do we in fact increase the sanctions? And everyone at the time was talking about—from the secretary of state to even the president—that this was to demonstrate to the world the president of the United States had the full faith and credit of the United States Congress behind him to put pressure on the rest of the world to say, "Hey, look, you lift the sanctions, you're—we're going to be on our own here. Don't lift the sanctions. Get the inspectors back in." That was the context of the debate, to be fair about it...
...The threat he presented was that, if Saddam was left unfettered, which I said during that period, for the next five years with sanctions lifted and billions of dollars into his coffers, then I believed he had the ability to acquire a tactical nuclear weapon—not by building it, by purchasing it. I also believed he was a threat in that he was—every single solitary U.N. resolution which he agreed to abide by, which was the equivalent of a peace agreement at the United Nations, after he got out of—after we kicked him out of Kuwait, he was violating.