The text after you complete the quest:
Lor'themar Theron yells: Aethas! You're alive!
Archmage Aethas Sunreaver says: Thanks to this hero, a few of us made it out of there. Many more have been sent to the Violet Hold.
Lor'themar Theron says: Anar'alash denal! Will someone tell me WHAT is going on in Dalaran?
Archmage Aethas Sunreaver says: Proudmoore! She's gone and expelled the Sunreavers from the city. She's purging the Horde from the Kirin Tor!
Lor'themar Theron says: She's gone too far. I'm certain the Alliance can move their war mages through the city at will. That human ... witch!
Lor'themar Theron says: When will they learn? When will they see that the Horde exists BECAUSE of the Alliance? Because of their prejudice and their bigotry! They force us ever closer to Hellscream's Horde.
Archmage Aethas Sunreaver says: My Lord...
Lor'themar Theron says: Hal'duron, summon the rangers. Rommath, assemble the Blood Magi, and add the Sunreavers' strength to your own.
Lor'themar Theron says: We Sin'dorei will take our future into our own hands.
Lor'themar Theron says: And get this damn thing out of my sight! Hellscream bought this treasure with the blood of my people. I hope it destroys him.
Grand Magister Rommath says: My Lord. YOU would make a fine Warchief.
Lor'themar Theron says: It may come to that. Bring me my blades. The next move is mine.