Chuck Hagel: “He said clearly that in his words, he has Israel's back.”

It is the biggest responsibility any leader has, to leave the place better than they found it, and I do not think we are doing it right now.

Not everyone at the White House has agreed with me.

The Chinese are watching this as relates to Taiwan, the Iranians, the North Koreans -- all countries are watching this, and watching the U.S. response to it, and the West response to it.

Planning for climate change is not some frivolous waste of time, a waste of money. It is essential to our troops and to their wellbeing, and the national security of this country.