Donald Trump has threatened to apply tariffs on critical minerals in a move that could increase tensions with China and open a new front in a global trade war that has rattled markets.

India is betting on the tradition of “frugal innovation” and its huge tech talent pool to catch up in the global artificial intelligence arms race, as it seeks a share of the fast-developing industry.

In Friday’s FT, Sir Andrew Cook, chairman of William Cook Holdings, claimed that “China does not trade fair” in steel (“What needs to happen to save steelmaking at Scunthorpe”, Letters, April 11).

From Val Hamilton, Nethy Bridge, Morayshire, Scotland, UK ...

The letter from Alfred Bestford (“An engineering student’s brain drain warning”, Letters, April 8) reminded me of my own experience. I graduated with a degree in engineering science from Warwick ...