Here is the actual exchange between Warner and Petraeus:
WARNER:Are you able to say at this time if we continue what you have laid before the Congress here as a strategy, do you feel that that is making America safer?
PETRAEUS: Sir, I believe that this is indeed the best course of action to achieve our objectives in Iraq.
WARNER: Does that make America safer?
PETRAEUS: Sir, I don't know, actually. I have not sat down and sorted out in my own mind. What I have focused on and been riveted on is how to accomplish the mission of the Multi-National Force-Iraq.
I have not stepped back to look at -- and you've heard, with other committees, in fact, you know, what is the impact on -- I've certainly taken into account the impact on the military. The strain on our ground forces, in particular, has very much been a factor in my recommendations.
But I have tried to focus on doing what I think a commander is supposed to do, which is to determine the best recommendations to achieve the objectives of the policy from which his mission is derived. And that is what I have sought to do, sir.