At some point a tipping point has to be reached that denotes a visible sea-change in the Iraqi condition. I don't know what that will or should be. It's just that the daily counts of captured weapons alone won't change anything.
They read like the periodic news reports of huge drug busts in the War on Drugs.
On the bright side: It's not always obvious when you're reaching a tipping point. The surface reality can look static even as the underlying reality is changing steadily. Then when some threshold is reached, the surface reality changes quickly. So we could be moving towards a true victory in Iraq; it's just hard to tell, even after you factor in the under-reported DoD news releases.
One indicator might be the recent survey showing 71% of Iraqis want the U.S. to stay until we've stabilized things.