Hello. US President Donald Trump and Tesla billionaire Elon Musk have traded insults at each other - suggesting a bitter conclusion to their unlikely alliance. Our North America correspondent Anthony Zurcher has analysed their war of words. Europe editor Katya Adler explores how Denmark’s left got tough on immigration. And finally, a very special tiara belonging to a history-making woman has sold for a six-figure sum in the UK.

TOP OF THE AGENDA

Trump and Musk row erupts in public view

Musk and Trump pictured during happier times in their relationship

After hours of sparring on their respective social media platforms, it's clear that the relationship between Trump and the world's richest man has soured. The day began with Trump saying he was "disappointed" with Musk's criticisms of his spending bill, with Musk later accusing Trump of "ingratitude", adding: "Without me, Trump would have lost the election". The two exchanged threats and insults throughout the day on subjects including Space X, Jeffrey Epstein, Doge and EV subsidies. It remains to be seen whether the pair can reconcile when they have a scheduled phone call with each other on Friday, according to reports.

• Analysis: Washington buckles up as president and richest man fight, writes Anthony Zurcher 
  

• Watch: How Trump and Musk's break-up played out on social media

• Stock market reacts: Tesla shares tumble as feud between billionaires erupts 

WORLD HEADLINES

BEYOND THE HEADLINES

The country where the left make hardline immigration laws

Denmark's PM Mette Frederiksen has made a public break with her party's past reputation of openness to migration

When you think of Denmark Scandinavian clichés spring to mind: images of a sleek, impossibly chic Copenhagen and a liberal, open society, writes Katya Adler. But our Europe editor adds that when it comes to asylum seekers and people looking to work in Denmark, the country has taken a dramatically different turn - where the left, not the far right, is taking the migration bull by the horns.