You are touching on something. During the Vietnam war, one of the most beloved Generals, Harold Johnson, Army Chief of Staff drove to the Oval Office and told the president he was resigning. LBJ begged him to stay because he knew of Johnson resigned, he was going to lose the military.
Resignation is a huge trump card and I am sure that if General Petraus played it, Obama would be terrified. However, I do not take the General for a man who plays politics, but a man who loves his troops.
I don't think so. Obama is too arrogant.