Kane very visibly has the weight of the world on his shoulders. As the Chancellor, conducting the lottery to determine who will be allowed to survive in the bunker is his responsibility, but it can't be easy for him.
Jaha made no secret of the fact that he was not pleased with sharing the bunker with the other clans — and especially not sacrificing his own people to do so. Will he stand idly by as Kane conducts the lottery?
Octavia was never *officially* named as the new commander of the clans, but she's pretty much assumed the role. O makes an excellent ruler and managed to unify the clans as her first order of business.
Bellamy: Raven, we need you to get us off the ground before the death wave hits. What do you say? Can you do it? Raven: What do I say? I say that death wave can kiss my ass. Clarke: Good. It's settled. We're going back to the Ark.