Everything began to move once Dean Ulluw returned to the human leaders, relaying Khan's message so that they could spread the word to the other guests in the quadrant.
The event forced the group in the desert to disperse, at least partially. Monica, Zalpa, Snow, and the other Niqols left, returning to what was left of Aynor to reunite with Khan's forces.
Only Rodney, Doku, and George remained in the desert, planning to help represent their respective species. Theoretically, George was superfluous there, but his direct testimony of the Scarlet Eyes' army's power was priceless, so he stuck around.
Khan, Liiza, and Yeza didn't hesitate to join the trio, but their arrival couldn't claim their attention when a never-before-seen scene unfolded all around them. Diverse envoys were converging in their location, filling the symphony with political tension.