The president and I sat down in the Oval Office, and he expressed very clearly that what he wants from me is my best professional military advice.
There is no military solution to the challenges of Syria.
Political progress will only take place if sufficient security exists.
I think no commander ever is going to come out and say, 'I'm confident that we can do this.
I will not ever run for political office, I can assure you of that.
Every civilian's death diminishes us, collectively.