France almost had a civil war over their withdrawal. The world will back an Israeli pullout of settlers. To date, the IDF leadership is not settler. 30% of the mid-level officers are religious (not all are settlers). The settlers are lightly armed. Given the lack of violent resistance to the Gaza withdrawal, don't be so quick to think they will fight a civil war.
Germany shelves Nazi crimes probe of US national Karkoc (AP)
from the article: Israel going for one million Jews in the West Bank