ISIL continues to expand despite setbacks
ISIL's strategy is assymetric to the extent it reacts to attacks by attacking somewhere else. It is basically a RICO enterprise that looks for new opportunities to gather funds and recruits. On the otherhand, it should not be considered a traditional insurgency within the calph real estate it controls. There is is an oppressive totalitarian manager of area and people. That is why a twofold strategy must be used against it, with a combat persisting strategy directly attacking its bases and a counter inurgency strategy against its operations in Europe and other areas it targets.