David Gergen: “I think what Cohen did was very helpful to the Democrats because he put a lot more fuel in their tank to do further…”

I think we're in an unsustainable path. It's compared to being in a car on the edge of a cliff, and middle of the night with it with a rainy and no headlights.

If he had a receptive audience, and I will tell you, when everything -- when all the facts were to come out, it would be like Nixon and the tapes.

If he comes out and throws cold water on this, then I don't think it goes anywhere.

I think, basically, this is about power. I think he wants to cripple Joe Biden before he ever gets started.