Susan Rice: “The U.N. can do the same job in peacekeeping for about 12 cents on the dollar.”

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…

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

When the people closest to you say you're unfit to lead, that's very, very concerning and dangerous.

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.