John Kerry: “The problem we have is right now we are on track to hit four or 4.5 degrees. That is unlivable.”

We will communicate to the office that you're asking and that it's important to try to get to it as soon as possible.

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.

The era of the Monroe Doctrine is over.

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