Leon Panetta: “Senator, if I could, I share your concern deeply.”

You know, Erin, as CIA director, I had an awful lot of intelligence on Putin and his background, and his trustworthiness. And the bottom line is that it was clear that we could never trust Putin's word.

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 message that went out from this meeting to the world is that United States credibility in dealing with our allies has taken a real hit.

it's shaping up to be “Trump’s Vietnam,”