American submariners once talked of roaming the Pacific almost as if it were an American lake. They joked that Chinese submarines were so noisy they could be heard from California’s coast. But America’s undersea dominance is now under threat.

Elsewhere, the Iran war has pushed up petrol prices. That much is well known. But the conflict is also driving up the cost of many other goods, from aluminium to pistachio nuts. We’ve put together maps and charts showing the scale of the disruption.

15%, the share of global tantalum supplied by Rubaya, a town northwest of Goma in the Democratic Republic of Congo. Read why M23, a Congolese militia, wants to sell critical minerals to Donald Trump.