Amer Spectator has a credible critique:
Donald Rumsfeld tried to run a businesslike war. But warfare is not business; it is not fought at the margin. By striving to do just enough to win, we have done too little. The right strategy is to do too much.
Citing ongoing Brookings Institution reports — its Iraq Index — Harvard Law prof William J. Stuntz concludes:
More soldiers mean less violence, hence fewer casualties. The larger the manpower investment in the war, the smaller the war's cost, to Iraqis and Americans alike. Iraq is not an unwinnable war: Rather, as the data just cited show, it is a war we have chosen not to win. And the difference between success and failure is not 300,000 more soldiers, as some would have it. One-tenth that number would make a large difference, and has done so in the past. One-sixth would likely prove decisive. [Italics added]
As in cities, “more cops on the street” is the answer.
If the goal is to cut our losses, the best move is not to pull back, but to dive in--flood the zone, put as many boots as possible on the most violent ground. Do that, and before long, the ground in question will be a good deal less violent.