While the great missing story in our media is the success of the reinforcements (we call it a surge), the real success is probabaly coming form the excess of Al Queda. Extremists like Al Queda always go too far. Iraq was a largely secular society and they are not responding well to the primitive theocratic rule of Al Queda.

Theocratic rule and forced marriage is just not sitting well with the Iraqis. But Al Queda really crossed the lined when they banned smoking. Now hostile forces are joining the coalition to defeat Al Queda.
Sometimes you can beat the enemy with resolve and sometimes you just need to hang in there long enough for them to do themselves in. Amd sometimes the right thing happens for the wrong or unexpected reasons.