Can the Green Zone be Breached?

Will the fortress of the Green Zone in Iraq hold under a massive coordinated attack? I hope Bush is prepared for the worst this time. The Green Zone could become another Bush disaster "that nobody could have predicted". From Juan Cole: How bad the situation is in Iraq is suggested by this email I just got from a professional who used to be in Iraq but now is in a nearby country: ' It is desperate in Iraq, worse then ever and there is no end in sight. I had lunch with [a former high ranking medical educator in Iraq] two days ago. [He]noted that Iraq no longer has neuro-surgeons, no cardiac surgeons, few pediatric doctors - they are all gone, killed or fled to neighboring countries like him. He was given seven days to get out or be killed. He is one of the lucky ones. He and his family have an opportunity for a new life in the US. But what about all the others. Where are they to go? Another friend, a Sunni sheikh of the Shammar tribe noted to me that thousands of former officers are prepared to assault the G[reen] Z[one]. It is no longer a matter of can they do it, they are only mulling over the timing. The breach of the Green Zone security the other day was a test of their ability to get in, and not a real attempt at a coup, though it is reported as such. Every Iraqi I talk to says unambiguously that the resistance attached to the former regime would take out the Shiite militias with barely a fight, but that the resistance will not commit wholesale revenge against the Shiite population. They just want to get rid of the "carpet baggers" from Iran. '