From "Meet the Press":

MR. RUSSERT: But the duly elected people's bodies, the U.S. Congress and the Iraqi parliament, say they want a troop withdrawal. That's more than a poll. Isn't that the voice of the people?

SEN. McCAIN: Well, the--as far as the Iraqi parliament is concerned, the Iraqi government obviously doesn't feel that way, their--the representatives in their government. Second of all, there is some, a certain amount of domestic political calculations involved there in what the Iraqi, quote, "parliament" said. The Iraqi parliament has their ability to, to voice their views, and I respect them. And I, as I say, I--I'll repeat again, I understand how democracies work. I saw it in Vietnam. I saw it in Vietnam. And I saw it in Vietnam, the predictions, that everything would be a worker's paradise in, in Vietnam if we left. And thousands were executed and millions went to re-education camps. So I, I believe that, that the consequences of failure, and particularly sitting on the large reserves of oil they have, particularly considering the influence of al-Qaeda is concerned, you will see enormous destabilization in the region, and that's my duty. That's my obligation. It's not my privilege. And political calculations should not enter into any information or position that I take on, on a, on an issue of national security.

Read the entire transcript here.