John Kerry: “Let me stress that I admire the Secretary's heroic, if ultimately unavailing, effort to broker a deal.”

There is no current proposal or plan that has been agreed to which would require us to do that.

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.

No, that's not acceptable. And I believe it was an algorithm that kicked that out kind of crazily.

Hopefully we can get there.