the fact of the matter is there was real friction between them. he thought she should have endorsed him in the race in 2016. they re rivals in the race. there s resentment he s stealing her thunder. and you remember they met before the beginning. there was a sanders warren meeting where they were trying to figure out if there was a way both wouldn t end up in the race. they had an idea of who the other the person should be. in 2016. it really was warren who was the person that a lot of the progressive groups wanted to see in the race. bill clinton was nerve about the prospect of warren getting into the race because of her appeal. and how she talks and debating skills. she with all the policy, she has taken some of the sentiments that surround sanders and she s turned it into something else. and i actually do think he serves her purposes in the race.