I'm not sure that any of us, mere mortals, have the correct answer for what needs to be done in Iraq.
But it doesn't take a genius to realize that it's not going well.
One cannot continue doing things the same way and expect different results.
Corporations change CEO's when the bottomline suffers.
Athletic Teams change head coaches, when there teams don't win.
We may not know what the other guy might do, but we do know the present guy, isn't getting it done.