He was sent there, fighting a war he didn't believe in, he believed it was wrong, and he thought **** it, and walked off.
Why should someone be sent to another country to murder its people when they don't believe in it?
He JOINED the military.... he wasn't grabbed from his bed in his cushy home and dragged to Iraq. In THIS country, when you willingly JOIN, you take an oath that says you will defend against all enemies, both foreign AND domestic. He was a quack sympathizer before he ever got there and I fully believe he had a plan from the beginning.
And he wasn't there to MURDER anyone. He was there to protect innocent Iraqi's... he even said that himself!