Is the Express a reliable source of information?
I can’t vouch for the reliability of this site, but it has been the stated objective of ISIS to draw the rest of the world into an epic clash that is supposed to cause the return of the 12th Imam type figure much like Iran’s radicals believe.
Islam copied and twisted much of the bible so their end game prophecy sort of follows the same script outline - massive battle and all is lost prior to the return of the king who will rule over all the world and smite his enemies.