The tide of the war is turning against the Islamic State. Between 1 Jan and 15 December 2015, the Islamic State lost control of 14 per cent of its territory. New analysis indicates that in the last 3 months, the Islamic State has lost a further 8 per cent of its territory.
http://www.janes.com/article/58831/islamic-state-loses-22-per-cent-of-territory