ISIS is starting to face resistance from Iraqi citizens. -Business Insider.

An ISIS militant. Business Insider/Reuters

Residents in Mosul are starting to resist the harsh rule of ISIS militants. -Business Insider. ISIS and it's campaign to destroy Iraqi cultural sites, like the Tomb of Jonah, have alienated the citizens of Mosul. When ISIS tried to destroy Mosul's famous leaning minaret, crowds of citizens prevented its destruction. Armed gangs have killed 4 ISIS militants and some Baathist militias are no longer supporting ISIS in Mosul. 

My Comment:

If it's true this is very good news. ISIS has very little in the way of actual fighters. It is very dependent on the support of Baathist and Sunni militias in their fight against the government of Iraq. If a resistance movement starts up ISIS will have to shift their forces around to keep their supply lines protected. This should hurt their drive to Baghdad. And it could also break the carefully constructed air of invincibility that ISIS has. 

It also does not bode well for the long term survival of the Islamic State Caliphate. Baghdad might fall, and Iraq might be split in three, but in the long term I don't see the Caliphate surviving. Blowing up treasured cultural landmarks, killing anyone that does anything against their strict interpretation of Islam and their campaign of genocide are not things that are going to popular with regular Iraqi's. The Sunni and Baathist militias will support ISIS for now but as soon as their common enemy is defeated, expect them to take up arms against them.