Abu Bakr Al Baghdadi had himself named Caliph—a position of total power! He is both Emperor and Pope. He will need to take Baghdad (his home town) as his capital now. He has in fact, by doing this declared war on Iran and lay claim to Mecca and the Holy places of Islam—He will need to expand. i believe he is smart enough to take Baghdad—by stelth. Then Jordan, The gulf states and Egypt. He can’t do too much to us as he will ne locked in a life or death struggle with Iran.
Yes, they have to submit to him, or destroy him, with not much middle ground. And islam has just lost its excuses. The caliphate can’t blame colonialism or western influence for internal problems.