Susan Rice: “I think you'd also be deeply concerned about our tremendous political polarization.”

But this summit meeting really ought to be tackling the toughest issues facing the world today, top of the list being the grave risks posed by rapidly accelerating artificial intelligence, as well as what's going on in Ukraine, what's…

Contrast that, as you did in your opening with Donald Trump, who is so profoundly dangerous, he is not committed to democracy at home or abroad, he embraces dictators.

I do believe he would do it. I believe we have -- if we have learned anything, we should listen to what he says and what he does is often exactly what he says and sometimes worse.

I take that very seriously, and I think we all should.