I doubt this will affect McCain's simple sloganeering, but I do think this provides substantial support for Obama's position.
Here's a link to the BBC story on the interview, including the video excerpt in which Petraeus expresses doubt on victory in Iraq (direct link to the video is below courtesy of Lowell).
http://news.bbc.co.uk/2/hi/mid...
http://abcnews.go.com/Politics...
In the video, Palin asserts that McCain and her "mission" in the war in Iraq is "victory."
Speaking of praying, Palin should pray that the rumors that her son Track enlisted in the Army to avoid a jail sentence are false, because in this clip she praises Track's decision.
Seriously, when Gibson charitably defines the Bush doctrine for her, she says that a pre-emptive strike would be o.k., if an attack on the U.S. were imminent. Whatever one believes about whether Bush really believed the intelligence on WMDs, and despite Cheney's rhetoric about a gathering threat and Rice's rhetoric about mushroom clouds, no one believed that the U.S. was facing an imminent attack before we invaded Iraq.
Again, it's too bad Gibson failed to follow up and insist that Palin opine on whether the invasion was wrong under her interpretation of the Bush doctrine.