Trouble at Wyrmrest

Objectives
Speak with Krasus at Wyrmrest Temple in Dragonblight.

Description
My old friend Krasus sends word of dire happenings at Wyrmrest, in Dragonblight. His missive was brief, but it seems that there has been some sort of attack on the Ruby Sanctum beneath the Temple.

Pressing business here in Dalaran keeps me from attending to the matter personally, but I have heard word of your exploits in the Lich King's Citadel and you are doubtless up to the task—perhaps you could assist Krasus in my stead?

Progress
...

Completion
Thank you for heading Rhonin's call, brave adventurer.

Let me share with you what we know regarding recent events, and any assistance you might offer would be greatly appreciated.

Rewards
You will receive:

Gains
Upon completion of this quest you will gain:
 * 2250 XP (or a compensation at level 80)

Progression

 * 1) Trouble at Wyrmrest
 * 2) Assault on the Sanctum
 * 3) The Twilight Destroyer