Is Zbigniew Brzezinski on Drugs?

The Herald-Sun reports that Zbigniew Brzezinski said the following the other day at Duke:

Brzezinski said there's no reason to think a bloodbath would necessarily follow a U.S. withdrawal.

"We expected that the U.S. leaving Vietnam would result in massive killings and genocide and so forth, and collapse of the dominoes in Southeast Asia," he said. "It didn't happen. How certain are we of the horror scenarios that have been mentioned in what will take place in Iraq?"

William Shawcross reportedly asks: "Outrageous, or demented?"