Today has seen chaos on global stock markets, with price plunges reminiscent of the famous Black Monday crash of 1987. Back then, the causes were unclear, whereas today there's no doubt - Trump's "liberation day" tariffs have spooked the markets.
In 1987, people feared Black Monday was a sign of a global recession. They were wrong. Are we right to have the same fears today?
Tom Cheshire is joined by Sky's Darren McCaffrey and stockbroker Russ Mould to discuss what might come next.
Producers: Tom Pooley
Editor: Philly Beaumont