The watching elders weren't sure what they should feel right now. On one hand, they felt betrayed by such a close companion being a traitor the entire time, but on the other hand, the Grand Elder had just killed the elder ruthlessly. Yes, logically, it was the correct decision, but the simple way that the snake died just left a bitter aftertaste in their mouths.
The Grand Elder remained silent after saying his piece and sighed again. He hated that he had to act like this for the interest of the Empire. If it were up to him, he wouldn't care about the snake being a traitor. They had been comrades for many years, and the affiliation of a comrade wasn't very important to the Grand Elder. He valued the beast, not their belonging.
Yet, since the Grand Elder was the Grand Elder, he had a responsibility he had to uphold. He had the responsibility to protect the Empire, and that forced him to kill the snake. He was the Grand Elder, and he needed to fulfill his duty.