John Kerry: “The truth is that climate change is real and poses significant challenges for our Nation's security.”

We do not trade any component of any of those other issues for what we are trying to do on the climate front.

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

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

The message coming out of this COP is, we are moving away from fossil fuels. We are not turning back. That is the future.