John Kerry: “I totally share your view that the Afghan women I've met and worked with are just among some of the most courageous…”

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.

It's very obvious that there are huge threats here.

Ninety-eight percent of all the scientists in the world agree----

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