A spate of serious safety incidents have increased fears about the power and impenetrability of the most advanced models

Picture humanity in a boat being swept down a raging river, praying there is no Niagara Falls ahead. Or imagine standing with the pioneering physicists in 1942 before they triggered the first self-sustaining nuclear fission chain reaction beneath a Chicago stadium.

These were two of the analogies used this week by Prof Robert Trager, an expert in the nascent field of AI governance, to describe the perilous but potential-filled moment the world stands at with accelerating artificial intelligence.

The order of discovery related to Fifa’s failed plan to sell the World Cup will worry the American president, a situation that tends to end badly for the culprit

“Tell Mike it was just business. I always liked him.”

“He understands.”

Social media, mental health problems, the pandemic and financial instability all contribute to the phenomenon

On Tess Lavanda’s YouTube channel there is one video with substantially more views than the rest: it is titled “I don’t have any friends” and has been watched more than half a million times since she posted it a month ago.

Over on Instagram she has posted dozens of reels with titles like “I turned 22 alone”, “Living alone in London” and “Feeling alone this summer is OK”, each garnering thousands of views and hundreds of comments, many from people feeling the same way.

The US defense secretary faces internal dissent and discord at the Pentagon, accused of focusing on culture war issues and his own political ambitions as the Iran war drags on

In a different Washington, under a different president, a return to the well-worn playbook of all-out sanctions to counter Iran might have been the signal for a publicity-hungry US secretary of defense to adopt a lower profile.

But these are no ordinary times. And Pete Hegseth is no ordinary defense secretary.

We asked you what you most wanted to put to our Guardian columnist. You responded in droves, querying her ‘beef’ with Burnham, who she thinks is this generation’s Hugh Grant, and what she really thinks about Richard Osman ...

• ‘There is light at the end of this tunnel. But the tunnel is filled with sewage’: an exclusive extract from Marina Hyde’s new book

What are your bunker plans?
James, Portugal
Masses of things to read, incredible food and an unethical doctor with an insane war chest of interesting pills. The second that bunker door closes, the doors of perception are opening.

Will Restore gain more traction by the next election and genuinely split the rightwing vote?
Natasha, London
They won’t split it in some 50‑50 way, but they could peel off a bit more from Reform’s right flank. Nigel Farage is looking vulnerable. In the Woody Allen film Deconstructing Harry, Robin Williams plays an actor who literally goes out of focus. Having once been sharp and clear, his nervous system is so shot that he becomes a physically blurred and imprecise distortion of himself. Metaphorically, something similar has happened to Farage in recent months.

Tapestry’s loan to UK is just another chapter in the love-hate relationship that has spanned the centuries since it was created

Five British prime ministers ago – and six French ones – when Emmanuel Macron first confirmed that France would return the Bayeux tapestry to Britain after 1,000 years, he told an audience at Sandhurst and Theresa May – the No 10 seat-warmer of the day – that when it came to France and Britain there were “two things that nothing can change, be it a vote or a political decision: our history and our geography”.

It was January 2018, 18 months after the UK had voted to leave the EU, and relations between the near neighbours were not good. The French political establishment had been shocked and angered by Brexit; personal relations were frazzled, and cross-Channel government contacts measurably dwindling. This was not a rupture that a piece of embroidered medieval linen, however perfectly it represented that tangled history, was going to solve on its own.

Reform UK leader maintains innocence in overseas funding controversy on last day of party conference

• UK politics live

Nigel Farage has claimed that he “wasn’t even listening” during a meeting at the centre of a controversy about whether his party considered evading the law on accepting donations from overseas.

The Reform UK leader also claimed he knew donation law “better than anybody” during interviews as he sought to salvage the final day of his party conference from the fallout that has already cost him two of his closest aides.

Port authorities say access roads ‘free flowing’ again after large group forces road closures in both directions

Dozens of people dressed in black and wearing balaclavas blocked the road at the port of Dover in Kent, forcing closures in both directions on Saturday morning.

Kent police said they were were in attendance and engaging with the protest, which the Port of Dover described as a “public order incident”. No arrests were made during the incident. Responsibility for the demonstration appears to have been claimed by an anti-immigration group with links to the far right.

Sector has avoided issue because of stigma fears, expert warns ahead of closure of Nottingham attacks inquiry

Mental health organisations have “failed to acknowledge” the risk of violence from a minority of people with severe mental illnesses, the chief executive of Mind has said ahead of the closure of the inquiry into the Nottingham attacks.

Dr Sarah Hughes, who has led mental health charity Mind for four years and has worked in the sector for almost four decades, said charities had shied away from addressing the risk of violence due to the fact it had increased the stigma and harassment around people with mental health conditions.

Blaze causes electricity supply failure and disruption of services to airport and Reading

A fire near a train track in the London Paddington area has caused major disruption, with services to Heathrow airport cancelled.

The fire caused an electricity supply failure which has left all lines between Paddington and the airport blocked, National Rail said.