Ah, I see what you're saying now...

So their "hope" is the hope that the rest of the "infidel" world will be completely obliterated.


Just to play a game of semantics:

Shi'as believe that Imam al-Mahdi will reappear when the world has fallen into chaos and civil war emerges between the human race for no reason.

No reason? They're ALWAYS a reason. Even "eh, I just felt like sending a missile their way" is a reason. It actually sounds like we're pretty safe from this Imam guy