PM’s effort to take heat out of Greenland situation is yet another humiliation in his relationship with The Donald

• UK politics live – latest updates

Toady, or not toady? That is the question. When even Piers Morgan has taken his head out of Donald Trump’s bum far enough to see a glimmer of daylight, then it’s fair to say the US president has probably overstepped the mark.

Not content with threatening tariffs against the UK and seven EU countries for sending troops to Greenland – having previously demanded Nato allies get stuck in to protect the country from Russia and China – The Donald has now sent a letter to the Norwegian prime minister to complain about not winning the Nobel peace prize and to say he was so pissed off he was thinking of starting a war instead.

Memo on how ex-Tory should act after Reform defection seems to channel Ricky Gervais character from The Office

The fallout from Robert Jenrick’s abrupt and chaotic defection from the Conservatives to Reform UK on Thursday continued over the weekend, with the leaking of a memo prepared by his aides for how he should face the press after the event.

The six-page document coaches Jenrick on how to answer some potentially tricky questions. While it reflects the character of the man himself, it also somehow manages to channel the spirit of David Brent, the character created by Stephen Merchant and Ricky Gervais, and played by Gervais in the original UK version of The Office, which aired from 2001 to 2003.

Carl Freedman Gallery, Margate
Munch, Bourgeois, Gormley and Baselitz go shoulder to shoulder with up-and-coming artists in an exhibition that revels in its stygian gloom

Tracey Emin catches me looking from her self-portrait to her as I try to assess the closeness of the resemblance. Not that close. This inky screenprint is bigger than she is, its face wider and taller. But it’s not a picture of the outer person but an inner vision. As we stand in front of it I seem to fall into radiating pools of blackness – to cross into darkness.

Emin has curated an exhibition for the depths of winter. It’s a generous, unexpected show with an eclectic yet profound openness to kinds of creativity many might think incompatible: paintings, installations, performance art all face the night here. She sets artists she nurtures at the Emin Studios alongside her heroes Edvard Munch, Louise Bourgeois and other luminaries of modern art – if luminary is the right word in this stygian setting. For, by a stroke of lighting genius, the Carl Freedman Gallery has been plunged into nocturnal shadow that still lets you see the art.

A decision on China’s controversial mega-embassy in London is imminent, with Chinese officials and British diplomats in Beijing anxiously awaiting the outcome of a planning application that could soon be approved. MPs from across the political spectrum have condemned the proposal, but UK security services say they can contain the espionage risks posed by the expanded site, which sits close to sensitive data cables linking to the City of London

• UK politics live – latest updates

Embark Studios’ multiplayer extraction shooter game has already sold 12m copies in just three months. Will it capture you too?

Released last October Arc Raiders has swiftly become one of the most successful online shooters in the world, shifting 12m copies in barely three months and attracting as many players as established mega hits such as Counter-Strike 2 and Apex Legends. So what is it about this sci-fi blaster that’s captured so many people – and how can you get involved?

So what is Arc Raiders?

Keir Starmer has held an emergency press conference in response to Donald Trump’s tariff threats over Greenland. Pippa and Kiran discuss what the UK prime minister said and how it may be received

US president says he no longer feels the need to think ‘purely of peace’ in letter to Norwegian prime minister

Donald Trump has linked his repeated threats to seize control of Greenland to his failure to win the Nobel peace prize, as transatlantic tensions over the Arctic island escalated further and threatened to rekindle a trade war with the EU.

In an extraordinary text message sent on Sunday to the Norwegian prime minister, Jonas Gahr Støre, the US president wrote that after being snubbed for the prize, he no longer felt the need to think “purely of peace”.

Esther Ghey says daughter’s eating disorder and self-harm had been exacerbated by harmful online content

The mother of the murdered teenager Brianna Ghey has urged Keir Starmer to ban social media for under-16s, adding to growing pressure on the prime minister before a crunch vote on the issue on Wednesday.

Esther Ghey wrote to Starmer on Monday explaining in detail how she felt her daughter’s eating disorder and self-harm had been exacerbated by TikTok influencers with whom she had become obsessed.

His eponymous label is renowned for its opulent, elegant take on women’s fashion and has a legion of famous fans

Valentino Garavani, the designer central to pioneering Italian glamour with his eponymous fashion house, has died aged 93.

“Valentino Garavani passed away today at his Roman residence, surrounded by his loved ones,” his foundation said on Instagram on Monday. “Valentino Garavani was not only a constant guide and inspiration for all of us, but a true source of light, creativity and vision,” it added.

Forty-eight people remain in hospital, with 12 in intensive care, after two trains collide in Córdoba province

• Spain train crash – latest updates

At least 39 people have been killed and 12 are in intensive care after two trains collided in southern Spain on Sunday night in what the prime minister, Pedro Sánchez, called “a night of deep pain for our country”.

A high-speed Iryo train travelling from Málaga to Madrid derailed near the municipality of Adamuz in Córdoba province at about 7.40pm on Sunday, crossing on to another track where it hit an oncoming train, Adif, Spain’s rail infrastructure authority, said on social media.