Good or bad?
Good or bad?
Apparently it is part of the islamic Apocalypse that muslims will destroy Mecca and the Kaaba, conquer Jerusalem and rull the world from Jerusalem. Mecca is not destroyed yet, so one of the things muslims can do to speed up the Apocalypse, which is what ISIS is trying to do, is destroy Mecca.
This is bad, because if they actually do this, it may make them more legitimate in muslims eyes, and it may actiually bring about the caliphate.
Over at Walid Shoebat's site, he is interpreting this as Turkey wanting to destroy Saudi Arabia through ISIS, then becoming the caliphate itself with Iran as an ally.