I think it may be that we are no longer the top priority, despite what they say. They think that since the arab spring, they have a chance to construct a real caliphate and unite the islamic states. This will mean a muslim civil war during the ten years as they fight for control, but they figure that they can build a strong caliphate with nukes and at the end of the ten years be ready to conquer the rest of the world.
They have Nukes, its with Pakistan. And its Sunni nuke.