Violence decreased fr a numbe of reasons. One may be the infusion of troops. However, this does not mean the 'surge' worked.
The purpose of the surge was to allow Iraqis to make progress in shaping political agreements between tribes for lasting peace. There is not much progress on this front, and will not as long as we conservatives are flipping the bill for Iraqi security.
In anycase, it may still be true that the influx of troops did cause improved security, just coincided with it.
Correlation is not causation.
Just because you eat more ice cream in the summer doesn't mean that ice cream causes you to swim in your pool more often. Correlated, but not causal.
I would argue however that the surge had some affect. However, the cleansing of neighborhoods in Iraq into one-tribe districts played a major role in reducing violence.
Also reducing violence is all the bribes we are paying out to would be insurgents. That should drive conservatives crazy! Paying U.S. money to insurgents to stay home. How long can we keep it up?
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