I think that whole thing about the medal for refraining from firing their weapons was close to the last straw.
http://voices.washingtonpost.com/imp...your_fire.html
I'm also pretty shure his frustration is due to being 'led' by a pack of rank idealistic amateurs.
On one hand its a bad thing to speak in public against your 'superior officers'.
On the other hand McChrystil puts the welfare of his charges ahead of his own carrier.
This will be a tough damage control issue for the white house. Its hard to fight the truth.
Have a look at McChrystil's service record.
http://www.foxnews.com/politics/2010...tal-biography/
Compare that to our community activist in cheif.