Mistrust as Iraqi Troops Encounter New U.S. Allies – New York Times (7/16/07):

The gulf between Abu Azzam’s men and the Iraqi soldiers remains vast, with American troops sometimes having to physically intercede. And it is an unmistakable caution that the full depths of the problems facing Iraq cannot be measured in the statistics about insurgent attacks and sectarian killings that carry so much weight in Washington.
[...]
Recently, and without warning, Colonel Pinkerton said, 80 Iraqi soldiers in armored vehicles charged out of their sector toward Nasr Wa Salam but were blocked by an American platoon. The Iraqis refused to say where they were going and threatened to drive right through the American soldiers, whom they greatly outnumbered.

Eventually, with Apache helicopter gunships circling overhead and American gunners aiming their weapons at them, the Iraqi soldiers retreated. “It hasn’t come to firing bullets yet,” Colonel Pinkerton said.

I thought all of this was supposed to be a good thing. Maybe now is the time to add a siege to the surge.