The Economist. Hello and welcome to the intelligence from The Economist. I'm your host,

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

Many of us worry about what screen time is doing to our young.

What effect will it have? How much is too much and how best to moderate it.

But there's another group that seems addicted to their devices, senior citizens.

And this weekend, Johann Strauss turns 200.

But all these years later, the waltzes he created are as youthful as ever.

From Vienna to strictly come dancing, our correspondent really had a ball reporting this one.

Thank you. correspondent really had a ball reporting this one. But first... American and Chinese officials are meeting this weekend at the ASEAN summit in Kuala Lumpur. The talks are a desperate attempt to ease tensions.

Earlier this month, China unveiled its most aggressive set yet of export controls.

It announced restrictions on seven rare earth elements

used to power everything from phones and electric cars to weapons.

Unsurprisingly, America is pushing back.

Jameson Greer, the U.S. trade representative,

called it a global supply chain power grab.

Well, China has taken a number of retaliatory trade actions against the United States,

Europe, Canada, Australia and others in recent years.

This move is not proportional retaliation.

It is an exercise and economic coercion on every country in the world.

This is yet another chapter in a long-running trade war, but it signals that the balance

of power could now be shifting.

I think if you look at Donald Trump's first presidency, China was really on the back foot.

...