From the UK Independent ...

The US commander in Iraq, General David Petraeus, expressed long-term interest in running for the US presidency when he was stationed in Baghdad, according to a senior Iraqi official who knew him at that time.

Sabah Khadim, then a senior adviser at Iraq's Interior Ministry, says General Petraeus discussed with him his ambition when the general was head of training and recruitment of the Iraqi army in 2004-05.

"I asked him if he was planning to run in 2008 and he said, 'No, that would be too soon'," Mr Khadim, who now lives in London, said.

General Petraeus has a reputation in the US Army for being a man of great ambition. If he succeeds in reversing America's apparent failure in Iraq, he would be a natural candidate for the White House in the presidential election in 2012.

I pass this on with the caveat that Mr. Khadim may have various axes to grind against Petraeus. I don't know one way or another. It's just an important possibility to keep in mind. Khadim was in the Interior Ministry during Allawi's prime ministership, how that might fit in I do not know.