John Kerry: “When we have worked with our friends in the region to combat these problems, our work has had results.”

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

I would personally absolutely. I'm not sure what it is that couldn't be put on paper.

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