John Kerry: “I talk about foreign policy as economic policy.”

It's a matter of mathematics and physics, not politics, not ideology. It is a response to the science.

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.

People think this is now, you cannot reverse it, it is irreversible.

Only one group of people, and they are here in Washington, and some of them spread around the country.