Hello and welcome to the Intelligence on Economist Radio.

I'm your host, Jason Palmer.

Every weekday, we provide a fresh perspective on the events shaping your world.

This weekend, the world's airline executives meet in South Korea.

The biggest topic?

The complete grounding of Boeing's 737 Max Planes,

which have been involved in two fatal crashes.

The aerospace giant may well recover,

but the tragedies could force a reshuffle in how air safety is regulated.

And we pay a visit to Venice's Biennale.

The exhibition engulfs the city every two years

and is a particularly pointed reflection

of what artists make of the world.

No surprise, then, that notions of immigration

and climate change figure in strongly this year.

But first...

Tomorrow, retaliatory tariffs imposed by China on $60 billion worth of American goods

will take effect.

The latest set of American tariffs imposed

three weeks ago will start to bite two as ships carrying Chinese goods arrive in America's ports.

Meanwhile, President Donald Trump has opened up a new theater of trade war, this time on the

southern border. Last night, he tweeted that America would start ratcheting up tariffs on Mexican goods,

...