Faye Kellerman wrote a fictional book about a mysterious series of murders which rocked the German city of Munich. The setting of this book was in the late 1920's when the economy was in shambles and when Hitler was rising to power in the years after his unsuccessful putsch. The title of that book, "Straight Into Darkness", aptly described the destination of the city of Munich along with Germany(and much of Europe). Darkness was the destination, and that is the destination of Iran's government and people.
The "Supreme Leader" has, for a third time, called this fraudulent election for Ahmadinejad. Buddy, everyone heard you the last two times..
There is no real way to know what will happen, but we can make predictions and throw out different scenarios. We know Ansar Hezbollah and the paramilitaries are ready for a showdown. We know the protesters are ready to go out into the streets day after day, beating after beating, shooting after shooting. We know the totalitarians have decided that they like power too much to give it up, no matter what their better angels(if they have any) beckon them to do. We also know that the reformist leaders will not back down no matter how many of them are arrested or intimidated. We also know that the regular army, and indeed much of the regular police force, are trying to sit on the fence. Finally, we know that whatever happens in Qom will not stay in Qom.
What goes without question is that there will be blood.
If the Assembly of Experts decide to sack Khamenei(as is being discussed), it may be enough to push the regular police and the regular army off of the fence. At that point, there will be a lot of bloodshed because the paramilitaries and the RGC are not going to go quietly into the night. They would rather kill their fellow countrymen and fellow Muslims rather than watch their precious government(of the thugs, by the thugs, and for the thugs) fall.
If the Assembly of Experts rule in favor of Khamenei, than the chance increases for the Islamic Republic of Iran to fall entirely. Many clerics are already being blamed for what has happened to the country, and the blame upon them will only become more extreme if they prove themselves entirely unable to check and balance the power of government. Of course, if the Assembly rules in favor of Khamenei, there is a good chance that the fence-sitters will stay where they are and let the protesters be bloodied.
Can these protesters even be bloodied into submission? Probably not. Can further arrests stop them from chanting "God is great!" from their rooftops? I don't know. What I do know is what I have already said, and I'll say it again; there will be blood, and it will be(as Jefferson said) the blood of both patriots and tyrants that refresh the tree of liberty in Iran. May they never let that tree die.