While the US president has been at odds with the UK prime minister over Iran, the royals were able to bring the charm to Washington.

The case crystallises a wider public anxiety: an incredibly powerful technology is being built and controlled by a tiny number of feuding tech bros.

When a big defence tech chief starts sounding off about civilisation, he’s not just expressing an opinion.

It was a rare defeat for Prime Minister Narendra Modi, which signals an opposition not afraid to stand up to him, even on politically delicate issues.