I say he lacks the will to do what needs to be done.
Good Lord, he lacks the will to commit suicide like Joan of Arc? He does not have the power of a dictator, read the Constitution, neither does he have more than a bare handful of Congressmen with him. So what does he fight with in your scenario? Name the power he has to do what you want of him?
We’ll never get another chance like this. So in that light, I don’t care what he has to do, just that he does it.