John Kerry: “I think you know this is a matter of common sense, is better to deal with than an Iran with one.”

the only way to achieve that goal is by coming together in a multinational basis.

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.

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

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