Leon Panetta: “I think it is very important in any White House to be able to have someone like a chief of staff be able to look the…”

Make no mistake about it, that would be an act of war because it would threaten our national security.

I think we have to take this intelligence assessment as a real threat to NATO.

The answer is no, not at all. Not in 100 years. These plans that the Pentagon develops, we -- we develop these plans to deal with every potential crisis that's out there.

I think the United States ought to be part and parcel of any agreement to be able to provide a security assurance to make sure that Ukraine is protected from the kind of invasion that we've seen from Russia.