Leon Panetta: “Alliances are going to be the key to our ability to preserve peace and prosperity in the future.”

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.

The facts have to be presented to the American people, and it's the American people who will judge what is right or wrong.

I think it's a -- it is something we've got to pay attention to because I think this is a dangerous moment. If we're facing other lone wolf terrorists in this country.

The president, as commander in chief, has the power and responsibility to determine America’s future security.