Travel to Agmar's Hammer in the Dragonblight and speak to Overlord Agmar.
Directly east of this refugee camp stands Agmar's Hammer - testament to the Hordes' power in the Dragonblight.
While I have no doubt that our Horde brothers and sisters are already seeing the result of your efforts to bring the taunka into the Horde, I want you to deliver news of your success to Overlord Agmar in person.
Go now, <name>! Race the winds! East to Agmar's Hammer!
While you have undoubtedly championed the cause of the Horde elsewhere, many more have been working towards expanding our grasp deeper into Northrend. Even now we have forces establishing bases in the frozen reaches of this desolate wasteland.
We surround the Scourge on all sides. Victory nears as our armies amass at the foot of the Wrathgate, Angrathar. Soon we will tear down the gate and breach Icecrown.