It's a false equivalence. Lexa gets a deal to walk away with her people scot free. In so doing, she betrays the alliance, the memory of those she sacrificed at Tondc (so much for putting her people first) as well as the potentially hundreds of grounders who have already died in the Harvest Room. Clarke would have to…

Right on, Jacon.

Not sure how the episode proves that Clarke would have abandoned the Grounders if the choice had been offered to her.

The optimal solution would have been an alliance between the MM and the Arkers. However, that would have to have been negotiated before the MM went all vampire like on the Arker's marrow. Then the two technological groups would have been a combined force to counter the Grounders. I know Kane was yelling "We'll donate…

How are their plans irrational? They defanged the alliance, neutralized Clarke who was seen, at least by the elder MM President as the more dangerous threat, maintained their fortress and their technological advantage, and are likely to pick off several more sky people for their bone marrow needs. I wouldn't be…