Throw in a brand new govt. by people that are used to being ruled by a brutal dictator and you have a truly difficulty assignment.
Then add a political party bent on achieving absolute power,with rabid socialists willing to turn our country into a left wing paradise, even throwing our fighting men to the wolves, and the jobs gets even tougher.
Anyone who can succeed under these conditions (as we are ) are truly brilliant warriors. That's why Gen Petraeus is nothing short of a genius IMHO.
Anyone even willing to take on the mission has incredible courage.