Just a minor point, at first I was hearing about ISIS and ISIL. I wasn't sure if it was two groups or different names for the same group.
Turns out, they refer to themselves more as ISIL because the "L" stands for "Levant". A term we aren't familiar with in the US.
The Levant (/ləˈvænt/), also known as the Eastern Mediterranean, is a geographic and cultural region consisting of the "eastern Mediterranean littoral between Anatolia and Egypt". The Levant today consists of the island of Cyprus, Israel, Jordan, Lebanon, Syria, Palestine, and part of southern Turkey (the former Aleppo Vilayet).
So you can kind of get an idea of how far this is going to go.