John Kerry: “What we want to do is find ways to see if China and the United States can advance the cause together for the rest of the…”

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

The U.N. Finance Analysis suggests that it will cost trillions of dollars. Maybe $2.5 to $4.5 trillion a year between now and 2050.

What we are trying to achieve now is really to establish some stability if we can, in the relationship, without conceding anything.

It is not fair for us to be reducing.