John Kerry: “I think what we've put on the table respects that, but it requires a simple level of both transparency and a judgment.”

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

People think this is now, you cannot reverse it, it is irreversible.

The Administration is determined to try to stabilize what has been, particularly recently, a very unstable situation.

We're spending billions--literally, actually, trillions.