1. Foreign Fighters
One of the most interesting aspects of ISIS is perhaps its international composition and total rejection of national borders. The organization has not only established control over several cross-border areas and extended its reach well beyond Iraq, but has also integrated Islamist fighters from all around the world to its cause. The creation of an Islamic flag in order to represent a new type of state built on a foundation of religion instead of national values, means that nationalities are left behind when loyalty is pledged to the religious caliphate ISIS has established.