John Kerry: “I believe we need a hard-and-fast deadline, not an open-ended commitment of U.S. forces.”

But, we could with battery. We could with-- there's ways to make that work.

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

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.

Hopefully we can get there.