The Iraqi government promises, but I think it needs the support of the international community; that was made clear, especially about the liberation of Mosul. Even in some news it speaks about certain churches in Mosul, many ancient churches, being turned into prisons by ISIS. It's very difficult to know how to liberate the city from the forces of evil or darkness.
The Iraqis, too, encouraged the citizens of Mosul to do that as well. They sought to give them the courage, as they have done with certain tribes, on the ground so they could all work together along with the military in a way to liberate the city.