John Kerry: “Nothing in this agreement contemplated, if it gets reached, is based on trust. Nothing.”

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.

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

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

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.