A sad fact of the current state of our democracy is that anyone who wants to be president has to be by any reasonable definition completely insane. The fact that they are insane doesn't necessarily prevent them from being good presidents, but nonetheless they are completely bonkers.
This is doubly true now, as any president is not only going to have to deal with this disaster in Iraq, but also a federal government which has been staffed from top to bottom with career ideological Bushies who will fully understand that their job in a Democratic administration is to take it down.
Depressing, really.
