John Kerry: “I am not taking off against the President politically. I am disagreeing with him substantively.”

Depending on what it involves, shadow diplomacy has also saved us from a war.

No, that's not acceptable. And I believe it was an algorithm that kicked that out kind of crazily.

I have to admit to you, if anybody thinks it is radical to care about the protection of this planet for future generations, sign me up.

We are competing, but everybody has their own approach, which is one of the exciting things here.