John Kerry: “Climate change is an urgent challenge that we must confront with the seriousness it deserves.”

What we are trying to achieve now is really to establish some stability if we can, in the relationship, without conceding anything.

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.

The message is, let's find a way to be able to make sure when we fly, we're not leaving emissions that we cannot capture.

What a shame for our country that that happened.