Apart from being a presidential nominee, Obama has a job to do as a senator. So heres Obama in action:-
Petraeus hearing proves Bush got what he wanted
"It was Petraeus who, during the invasion, looked around at the chaos and said, rhetorically: "Tell me how this ends."
That was the question on Capitol Hill this week, but neither Petraeus nor Crocker could provide an answer. Both Democratic presidential candidates made valiant attempts to engage the officials in a reality-based dialogue....
Barack Obama conducted a polite but precise cross-examination, the aim of which was to get Crocker or Petraeus or somebody to define what an acceptable Iraq would look like. If violence were at current levels but without a large presence of U.S. troops, would that be good enough? He got another plate of mush."
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2008/04/13/ED68103E0K.DTL