Best episode yet! Why do you guys think in john did it? I have two theories
A) Jul attended this peace conf. and John captured Jul in order to get Halsey back.
B) Thel attended the peace conf. Which was actually a planned assaination and saved him.
I believe actually that the peace delegate, Richard Sekibo, actually was a defected militant representing the New Colonial Alliance… and was attempting to waver some alien allies… yet John-117 saved them from a life of continued war against the UEG.