From KCRW in Santa Monica and PRI, Public Radio International, this is To the Point.

Brexit, America First, and the end of Pax Americana.

I'm Barbara Bogabe, sitting for Warren Only, and this is To the Point.

British Prime Minister Theresa May is the first foreign leader to sit down with Donald Trump as commander-in-chief. May says it's to build on the special relationship between the U.S. and the U.K., and there's even talk of a new transatlantic trade deal. But how's that going to fly in a post-Brexit world, with a White House bent on buying American, hiring American.

We'll hear how the U.S. withdrawing from global treaties and embracing Russia complicates the relationship.

That's coming up.

And on today's talking point, a new experiment with a human pig hybrid holds promise for custom organ transplantation.

First News.

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This is To the Point. I'm Barbara Bogave in for Warren Alney. Later on the show, the scientific and ethical

challenge of growing human organs in barnyard animals, new advances in cross-species hybrids. That's coming up.

First, our main story, President Donald Trump

held up a joint press conference today at the White House with British Prime Minister Theresa May.

They talk trade and other ways to strengthen the so-called special relationship. In a moment,

we'll get reaction from Washington and London. But first, let's hear how this was just the first

of many diplomatic tests for the new commander-in-chief.

Michael Crowley is Senior Foreign Affairs correspondent for Politico.

Welcome back to the show.

Thanks for having me back.

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