Khan couldn't find peace.
The mental barrier had helped him go through the mission, and the many proofs of the Niqols' intense love in the village had brought some stability.
Liiza had made Khan realize his similarities with the mutated Niqols, which shattered that stability, but her intentions were pure. She wanted him to experience everything fully to gain access to a deeper layer of his feelings and allow her to take a share of that burden. Her desire was selfless, and it had made Khan go past simple acceptance. Liiza had managed to create some forgiveness and peace inside him.
Still, everything crumbled again during the briefing. The Global Army wasn't only aware of the incoming daylight. It had even decided to remain silent about the whole matter, uncaring of what the aliens and the recruits would experience.
