John Kerry: “I would argue that the most important role that we, the United States, can play in expediting change in Iran is to…”

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

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

Back-up baseload, no. But, some primary they could be part of it.

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