Although Uther Lightbringer had released him, Tirion Fordring's value was obvious. As one of the first five Paladins, he possessed all of the Kingdom of Lordaeron's current Paladin combat techniques and methods for training Paladins.
The Kingdom of Quel'Thalas already had High Elf Paladins in the Dawnblade Legion. If Tirion Fordring were allowed to go to the Kingdom of Quel'Thalas, the Dawnblade Legion would soon catch up to the Kingdom of Lordaeron's Silver Hand.
No one dared do anything to Tyrel. After all, if the Little Prince of the Kingdom of Quel'Thalas met with any mishap in the Kingdom of Lordaeron, even the now-aged Terenas Menethil II would be unable to bear the consequences.
Balthasar, the mayor of Stratholme, arrived at a secluded, shadowy corner of Stratholme and said to what appeared to be empty space, "No matter what, Tirion Fordring cannot be allowed to go to Quel'Thalas. Make sure he remains forever on the soil of the Kingdom of Lordaeron."
With that, he tossed in a large, heavy bag of payment.
"The Assassin's Alliance accepts your commission, Mayor Balthasar."
For the sake of the Kingdom of Lordaeron's interests, they could never stand by and watch Tirion Fordring safely reach the Kingdom of Quel'Thalas, even if he had already been exiled.
Thus, the Assassin's Alliance, the strongest and most mysterious assassin organization within the Alliance, was hired in secret.
Outside Stratholme, Tyrel, Arthas, Tirion, and the others had just left the city. With Arthas's help, Stratholme had let them pass without delay.
"Thank you, Arthas. If there's ever anything I can help you with, I will absolutely spare no effort." Before they parted, Tyrel spoke solemnly to Arthas.
Hearing this, Arthas could not help but recall what his father, Terenas Menethil II, had done. Arthas's appearance in Dalaran at such