Everything i have saw and read that was produced by ISIS had/has one theme.
The taking down of Al Aqsa mosque in Jerusalem.
In fact in May not only did Israeli Press bring up this possibility but the Mosque leaders did as well and urged all of Islam to fight the ISIS...mind you that was in May.
Here is a production video from last week by ISIS where they clearly point to Al Aqsa as their goal. Some GRAPHIC scenes.
That ought to set the world on fire.
It also will allow Israel to rebuild the temple...