Leon Panetta: “the protection of the United States from the threat of ballistic missile attack is a critical national security…”

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

It’s poor planning to wind up with your stockpiles of key weapons being depleted.

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.

Mr. Trump has always prided himself on being a dealmaker, pledging in his campaign that he would resolve such conflicts in the first few days of his presidency.