John Kerry: “We must ensure that our nuclear arsenal remains safe, secure, and effective.”

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

Depending on what it involves, shadow diplomacy has also saved us from a war.

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.

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.