When all else fails, blame the doubters for your failed policy.
It's a clever ruse. If the doubters continue to dout, blame all failures on their lack of nerve. If they syop doubting, you can avoid their criticism by saying "everyone supported it."
Ol' Penny also brings up that old chestnut, if we would be willing to slaughter a whole bunch of Iraqis now and let God sort 'em out, it will reduce the long-term suffering. An easy excuse for pooh-poohing concerns about power abuse.
In reality, he is half-right. Genocidal fury unleashed is the one thing that can pacify Iraq. However, I doubt that it will reduce the suffering of the Iraqi people, and I further doubt that down the road it would be good for us, either.
That is all.