John Kerry: “Having a good comeback or two up your sleeve, that's not just good practice, that's it's good raw politics.”

Well, she is, in regard to, writ large, the energy policy. Sure, she is the primary.

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.

Nothing is agreed to until everything is agreed to.

In terms of global challenges and U.S. interests, yes.