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The Lead Microsoft has launched ASSERT, an open-source framework designed to make evaluating application-specific AI behavior easier. The framework uses AI to turn natural-language descriptions of goals, policies, or intended behaviors into thorough, scored tests. How ASSERT Works ASSERT takes plain-language descriptions of an AI model's expected behavior and policies, turns them into a structured set of acceptable and unacceptable behaviors, generates problem scenarios and test cases, runs them against the target system, and scores the results. It can also record the paths the AI system takes, including intermediate actions and tool calls, allowing developers to inspect where failures happen. The Data Analysis By providing system context, tools, and constraints, developers can further customize what the evaluations cover. For instance, a developer could specify that a document research AI agent shouldn't send emails to people outside the company and should limit confidential information to C-level executives. ASSERT will use those rules to generate test cases that check whether the system follows those rules on an ongoing basis. The Impact Analysis Sarah Bird, chief product officer of Responsible AI at Microsoft, emphasized the importance of evaluations in making good decisions. 'If you don't understand the behavior of the AI system, it's really hard to know if it's meeting your organization's bar,' she said. ASSERT fills a gap that broader, more general evaluations cannot when AI models are intended to behave in a manner shaped by an application's context, policies, and tools. The Prediction The release of ASSERT comes amidst a broader shift in the AI industry towards repeatable testing and regression checks. As models grow more capable, researchers are focusing on evaluating systems when they're being built, after deployment, and even for continuous monitoring. With ASSERT, Microsoft aims to provide a tool that can be used throughout the AI development lifecycle to ensure trustworthy systems.

The U.S. Trade Representative Jamieson Greer announced a proposed 25% tariff on a range of Brazilian imports, citing alleged unfair trade practices such as digital trade violations and illegal deforestation.Details of the Proposed 25% Tariff and Its ScopeThe tariff would be imposed under Section 301 of U.S. trade law, which allows sanctions for perceived violations of trade agreements.Exemptions include beef, coffee, rare earths, other metals, energy, and aircraft parts.The investigation began in July and targets issues like illegal deforestation, ethanol market access, and anti‑corruption enforcement.Public comments are accepted from Thursday until July 1, with a hearing in Washington on July 6.Trade Numbers Highlight Surplus Despite Tariff PushIn March, Brazil imported $3.3 bn of U.S. goods versus exporting $2.9 bn, yielding a $420 m U.S. trade surplus.Last year a 50% tariff was imposed on many Brazilian products; the new plan replaces it with a uniform 25% rate, except for the listed exemptions.The U.S. recently reduced tariffs on select aluminium, copper, and steel from 25% to 15%, set to expire in December 2027.Potential Economic and Political Ripple Effects for Brazil and the U.S.Brazilian sectors such as agriculture, mining, and aerospace could face higher costs, potentially feeding into domestic inflation.U.S. exporters may see limited gains due to the existing trade surplus and the exemptions for high‑value commodities.Political tensions are rising: President Luiz Inácio Lula da Silva's recent Washington visit did not ease frictions, and the U.S. State Department has labeled two Brazilian criminal gangs as “terrorist organisations.”Critics, including Rachel Ziemba of the Center for a New American Security, warn the tariffs could add modest inflationary pressure.What Comes Next: Comment Period, Hearings, and Future Trade PolicyStakeholders can submit written comments until July 1; the administration may adjust rates or exemptions based on feedback.A public hearing on July 6 will provide a forum for industry and advocacy groups to voice concerns.Analysts expect this tariff to be the first of several replacements for the IEPPA‑based national‑security tariffs, signaling a shift toward Section 301 mechanisms.Future developments may include additional tariffs on other countries under investigation, such as China and Vietnam.

The LeadEverton is making moves to sign Championship star Hayden Hackney from Middlesbrough, but faces significant competition from several Premier League clubs for the highly-rated midfielder.The Transfer TargetHayden Hackney, 23, has emerged as one of the most promising midfield talents in English football after being named the Championship's player of the season. The versatile player, capable of operating as both a defensive and attacking midfielder, has one year remaining on his contract at Middlesbrough following the club's failure to secure promotion to the Premier League.Everton manager David Moyes has reignited interest in the player he considered signing 12 months ago, as the Toffees look to strengthen their central midfield options. The England Under-21 international inadvertently became part of the "Spygate" scandal when Southampton spied on Middlesbrough's training session to assess his fitness for a playoff match.The Competition LandscapeEverton is not alone in pursuing Hackney, with several Premier League clubs monitoring the player's impressive form last season. Brighton, Tottenham, Nottingham Forest, Leeds, and managerless Crystal Palace have all expressed interest in securing the midfielder's services.The competition underscores the high regard in which Hackney is held across the English football landscape, with multiple top-flight managers seeing him as a potential solution to their midfield needs.The Financial PictureMiddlesbrough is expected to command a fee of £10m-£15m for their prized asset, reflecting both his current contract situation and his proven performance at the Championship level. The relatively modest price tag could make him an attractive option for clubs looking for value in the current market.Everton has not yet submitted a formal bid but is understood to be working on a deal that could see the player move to Goodison Park this transfer window.The Strategic ImpactFor Everton, securing Hackney would represent a significant statement of intent as they look to rebuild their midfield. The versatile nature of his game would provide Moyes with tactical flexibility, while his experience in the Championship could translate well to the Premier League with proper development.Middlesbrough, meanwhile, faces the prospect of losing their best player after failing to achieve promotion, potentially setting back their own ambitions for another season in the second tier.The Transfer OutlookWith multiple clubs in the mix, the race for Hackney's signature is expected to intensify in the coming days. The player's preference could ultimately determine his destination, with Everton hoping their renewed interest and Moyes's previous admiration will give them an edge in the negotiations.Regardless of the outcome, Hackney's situation highlights the growing trend of Championship players attracting significant attention from Premier League clubs, particularly those with the versatility to impact games in multiple positions.

Beijing's Center Stage in 2026 Global DiplomacyThe year 2026 has witnessed a massive influx of global leadership into Beijing, underscoring China's strategic positioning as the indispensable hub of international diplomacy and trade. With British Foreign Secretary Yvette Cooper marking the 26th senior official to visit the country this year, the trend highlights a global consensus: engaging with China is economically unavoidable. President Xi Jinping has notably spent the year hosting these dignitaries at home, consolidating his influence without needing to travel abroad.The Unprecedented Parade of Global OfficialsThe sheer volume and diversity of diplomatic visits in just the first half of 2026 demonstrate a concerted effort by the international community to court Beijing. Officials are arriving from every major region, seeking new investments, manufacturing cooperation, and access to the Chinese market.Total Visitors: 26 foreign leaders and senior officials from 23 countries.Regional Breakdown: Europe (10), Asia (8), Middle East (2), Africa (2), North America (2), and Latin America (2).High-Profile Attendees: Canadian PM Mark Carney, British PM Keir Starmer, German Chancellor Friedrich Merz, US President Donald Trump, and Russian President Vladimir Putin.The Economic Gravity of a $6.5 Trillion Trade HubThe diplomatic rush is firmly anchored in economic reality. China maintained its position as the world's largest trading nation in goods for the ninth consecutive year. The latest data reveals the massive scale of the country's economic gravity, which acts as the primary magnet for these global visits.Total Foreign Trade (2025): A record-breaking 45 trillion yuan ($6.5 trillion).Trade Surplus: Crossed the $1 trillion threshold for the first time, highlighting its role as the 'factory of the world'.Top Bilateral Trade: The United States leads with $414.7 billion in total goods trade in 2025, followed rapidly by Vietnam, Japan, South Korea, and India.Europe's Pragmatic Pivot to the EastOne of the most striking elements of the 2026 diplomatic wave is the dominance of European leaders. Accounting for roughly one-third of the visiting nations, European governments are clearly eager to engage closely with Beijing. This pragmatic approach persists despite ongoing geopolitical friction regarding security and China's relationship with Russia. The visits from the UK, Germany, Spain, Ireland, and Finland emphasize that access to China's tech hubs, like Shenzhen, and its massive consumer market takes precedence over ideological differences.The Future of Multipolar Trade AlliancesAs China transitions its export profile from low-cost textiles to high-value electronics, electric vehicles, and solar panels, the strategic importance of these diplomatic ties will only intensify. The continuous stream of leaders to Beijing suggests that future global alliances will be increasingly defined by supply chain integration and technological cooperation. As nations navigate a multipolar world, maintaining a direct, high-level dialogue with Beijing is no longer optional—it is a fundamental requirement for domestic economic growth.

The Return of a Legend Serena Williams has shaken up the tennis world by announcing her competitive return to the game after a nearly four-year absence. The 23-time Grand Slam winner and mother of two said on Monday that she will compete in women’s doubles at this month’s Queen’s Club Championships in the United Kingdom, where media reported she will play with 19-year-old Canadian Victoria Mboko. Williams' Road to Comeback The 44-year-old American great received a wildcard entry for the competition, which is seen as a warm-up for Wimbledon, the year’s third Grand Slam. Williams ended months of speculation over a rumoured return with a cheeky social media video captioned: “Good news travels fast.” Reactions from the Tennis World Former world number one Lindsay Davenport said she believes Williams could make an appearance at her home Grand Slam, the US Open, in a couple of months. “It seems like she’s trying to work her way up maybe to the US Open, and those fans would be so ready to see her back on a singles court there,” Davenport said. Naomi Osaka, who beat Serena Williams in the 2018 US Open final, was excited at the prospect of Williams' return: “It will bring people to watch tennis.” Aryna Sabalenka, the top-ranked player, said: “She’s a legend. It’s inspiring to see.” Coco Gauff, who looked up to Serena Williams growing up, chimed in: “One of my biggest regrets was not being able to play her.” Singles Return on the Cards? Fellow American and former champion John McEnroe suggested Williams could compete in singles at Wimbledon, which starts on June 28. “She’s not getting any younger, but she’s Serena Williams, so I bet you she would tell me about wanting to win the whole damn thing,” McEnroe said in Paris. Williams Joins List of Champions Making Comebacks Williams is not the only top-level athlete with unfinished business as advancements in training and medical care have allowed for longer careers across several sports. Seven-time track gold medallist Allyson Felix said this year that she would try to make the US squad in what would be her sixth Olympics.

The Lead: China-Africa Trade Expansion In a significant move that could reshape economic relations between Asia and Africa, China has announced the opening of its markets to African exports. This decision comes as part of China's ongoing efforts to strengthen economic ties with the African continent, potentially creating new opportunities for African businesses while addressing some of China's resource needs. The Event Details: New Market Access Agreements The agreement covers a wide range of African products gaining access to the Chinese market, including agricultural goods, minerals, and manufactured goods. This development follows years of negotiations between Chinese and African trade representatives, with China seeking to diversify its supply chains and African nations looking to expand their export markets beyond traditional Western partners. The Data Analysis: Trade Volume Projections While specific figures were not immediately available, analysts project that this market opening could increase China-Africa trade by an estimated 15-20% within the next three years. African nations particularly expected to benefit include Ethiopia, Kenya, South Africa, and Nigeria, which have significant agricultural and mineral sectors that can now access the vast Chinese consumer market. The Impact Analysis: Shifting Global Trade Dynamics This development represents a significant shift in global trade dynamics, potentially reducing Africa's economic dependence on traditional Western markets while strengthening China's economic influence on the continent. The move could also accelerate the implementation of the African Continental Free Trade Area (AfCFTA), as African nations gain more confidence in international trade relationships. The Prediction: Future of China-Africa Economic Relations Looking ahead, this market opening is likely to be followed by increased Chinese investment in African infrastructure to support the expanded trade relationship. Within five years, we may see the emergence of new value chains where African raw materials are processed in Africa before being exported to China, potentially creating more jobs and fostering industrial development across the continent.

A Critical Portrait of George MichaelIn 1998, George Michael was arrested for public lewdness in an LA lavatory, an incident that finally led the singer to publicly come out. The following day, Sathnam Sanghera found himself unable to leave his room at university: the doorway had been mockingly plastered with tabloid newspaper headlines – "ZIP ME UP BEFORE YOU GO-GO!" – by fellow students aware of his longstanding fandom. As a writer, Sanghera is best known for a series of award-winning books on the British empire, which he calls his "specialist subject". Judging by Tonight the Music Seems So Loud – not a biography so much as a miscellany, a set of themed essays that tend to digress in all kinds of intriguing directions – the life and work of one Georgios Panayiotou runs imperialism and its legacy a very close second.The Complex Legacy of a Pop IconIt is an unashamedly partisan book, although not an uncritical one. Sanghera is as alive to Michael's personal and professional failings (whether the naffness of some of his early work as one half of Wham! or his high-handed treatment of the duo's other half, Andrew Ridgeley) as he is in love with his artistic triumphs. These, of course, range from Careless Whisper and Wham!'s annually inescapable Last Christmas to the 1996 solo masterpiece Older, a peculiar and peculiarly effective cocktail of raw grief at the Aids-related death of his lover Anselmo Feleppa and unrepentant horniness.The Evolution of Critical ReceptionSanghera's love for his subject is evidently sharpened by the opprobrium of others. Indeed if the book has a flaw, it's that the author is old enough to remember an era when George Michael was deemed insufferably uncool by some arbiters of taste (incredibly, when Wham! performed at a 1984 benefit show for striking miners, the only mainstream pop act to show support for the cause, they were received stone-faced by the audience and savaged by the music press for their trouble), and thus has a tendency to underestimate how much both he and his music have been critically re-evaluated in the 21st century.The Artistic Journey of George MichaelHe says one of the spurs to write the book was his belief that "most truly popular music is not generally deemed worthy of serious analysis and George Michael's music most certainly is not". That might have been true once, but certainly not of late: when he died, this newspaper alone ran six features by critics analysing different aspects of his music. "He sang so exquisitely about the marrow of life, about the vital, corporeal things", wrote one, which definitely doesn't amount to taking George Michael insufficiently seriously.double quotation markEven as he skinned up in front of journalists and discussed his drug use and sex life, he was concealing the extent of the addictions that eventually killed himFamily Background and Cultural IdentitySanghera is very good on the climate of homophobia in the 80s, which might have given any gay public figure serious qualms about coming out, and fascinating on Michael's family background: how growing up embedded in north London's Greek Cypriot community impacted on everything from Wham!'s image – not camp, Sanghera suggests, but "the vision of two children of immigrants imagining a kind of glamour they had not actually experienced before" – to his work ethic and control freakery. His dad made good in England by working exceptionally hard, running such a tight ship at his restaurant that he summarily fired his only son for messing up the drinks orders. The fact that the same son went on to hire 12 different saxophonists before finding one that could play the solo on Careless Whisper to his satisfaction doesn't come as a huge surprise.The Perfectionist and Contradictory ArtistThis my-way-or-the-highway perfectionism could yield hugely impressive results – Careless Whisper's sax hook may well be the most famous in pop history – but it could equally lead to intransigence and self-sabotage. Michael worked incredibly hard to transform himself from a member of a teen pop band into a more adult-facing solo artist, but having sold a staggering 25m copies of his 1987 solo debut Faith, he refused to promote its follow-up Listen Without Prejudice Vol. 1, or even make videos for its singles: a better album than its predecessor, it achieved only a fraction of its sales as a result. It was evidence of a deeply contradictory nature that occasionally has Sanghera throwing up his hands in bewilderment.The Public and Private Faces of George MichaelMichael was a polymath, keen to be duly credited as the sole singer, writer, producer and musician on a succession of tracks, but also had a weird habit of talking down his abilities, claiming he couldn't play instruments he was perfectly capable of playing. He was a Stakhanovite who increasingly worked at an agonisingly glacial pace, endlessly fussing over details, a state of affairs not much helped by his gargantuan appetite for marijuana: coupled with bouts of writers' block, it meant he released only six albums of original material in a career that lasted 34 years. He was a Labour voter, booster of the NHS and famously generous philanthropist who also engaged in tax avoidance. After being publicly outed, he became a notoriously frank interviewee ("as if nothing can embarrass him anymore" the Guardian's Simon Hattenstone suggested when he met him in 2009). But even as he skinned up in front of journalists and freely discussed his drug use and sex life, he was concealing the extent of the addictions that eventually killed him.The Decline and Final YearsMichael emerges as a messy, unpredictable but ultimately hugely likable figure, which makes the essay about his demise particularly tough reading. Listed starkly on the page, the facts of his final 10 years make it obvious that he was a deeply unwell man whose life had spun wildly out of control: drug busts, medical emergencies, visits to rehab, rumours of breakdowns and suicide bids and seven incidents in which he either crashed his car or was found comatose at the wheel.The Professional Mask of Personal StruggleThat it somehow didn't appear obvious at the time – that his death at 53 felt like a shock rather than a grim inevitability – seems remarkable, but as Sanghera points out, Michael's professionalism did a lot to paper over the cracks. He was always available to the media and always smart, funny and self-effacing: to use a modern turn of phrase, he controlled the narrative. He was punctilious about his appearance – the star certainly never looked like an ailing drug addict – and unfailingly superb onstage.The Hidden Realities Behind the FameBehind the scenes, it was a different story. He struggled to make new music: at one juncture he booked six months of recording sessions but never turned up to the studio once. His once-acute commercial instincts seemed to desert him: even Sanghera can't muster much enthusiasm for the handful of still-unreleased songs he completed in his final years. He cut off close friends and family who tried to intervene. No one who knew him seems to have been particularly surprised by his death: the list of adjectives used to describe him on his official website now includes not just "icon" "legend" "soul singer" and "philanthropist" but "addict" "repeat offender" and "depressive".An Imagined Alternative LegacyAs the book draws to a close, Sanghera offers a heartbreaking alternative history. He imagines Michael conquering his addictions, coming to a complete accommodation with his musical past (to the end of his life, he was dismissive of Wham!, describing their oeuvre as an exercise in "ignoring my own intelligence" and declining to play most of their hits live) and headlining Glastonbury, "getting pleasure from the audience reaction to Club Tropicana".The Enduring Power of George Michael's MusicIt's affecting because you can imagine it so vividly: the endless succession of hits that anyone with even a passing interest in pop music knows, the pandemonium in the crowd when he breaks out Careless Whisper, the encore of Freedom '90. You don't have to be a fan on Sanghera's level to understand what a triumph it would have been. Tonight the Music Seems So Loud: The Meaning of George Michael by Sathnam Sanghera is published by Picador (£22). To support the Guardian, buy a copy at guardianbookshop.com. Delivery charges may apply.

The Ancient Art of Altamira The aurochs, the mammoth, and the steppe bison are long extinct, but their painted likenesses still look relatively fresh across the walls and roofs of Altamira. Or so said Diego Garate Maidagan, who is one of the very few humans allowed to enter that exalted cave in northern Spain. The Technique of Prehistoric Painters Garate's specialism requires close attention to the etching or “pecking” technique whereby the artists used flint blades to outline figures on the rock before applying their ochre and charcoal. Altamira is rare and precious, he told me, because those reds and blacks are still so solid and vivid. The colours were preserved in the near-quarantine conditions imposed by that long-ago landslide. The Impact of Human Presence on Cave Art The site was opened to the public in 1917, partly closed in the 1970s, then shut for good in 2002, as a century or so of gaping admiration revealed the paint-stripping effects of moisture and carbon monoxide from the breath of too many beholders. A replica cave, with replica artwork, was created on an adjacent site. Today, only Garate and other select scholars have access to the original sanctuary. The Future of Cave Art Research In the far north of the Basque Country, the recent search for such apparitions has stirred “a little revolution”, by Garate’s reckoning. He and his colleagues in Santander planned a campaign to test a working theory: that the caves of northern Spain and south-western France were once lavishly decorated with pictograms and petroglyphs, now barely visible to the untrained eye. Unlocking the Secrets of Prehistoric Image-Making The general idea, Garate told me, was to reverse-engineer the processes of prehistoric image-making: to unpack the practical, mechanical decisions of the artists, and thus to better understand their skill set, their knowledge base, their means and modes of communication. One project gauged the “luminous intensity” and “radius of action” achieved by burning different woods and fats to light the cave.

The Rise of Youthful Talent in England Rugby League The Challenge Cup finals have provided a platform for England's young rugby league players to shine, with Wigan's dominant performance against Hull KR showcasing their impressive youth talent. Wigan's Youthful Squad Impresses at Wembley Wigan's 40-10 win over Hull KR in the Challenge Cup final was led by 20-year-old Jack Farrimond, who received the Lance Todd Trophy. Farrimond's performance, along with that of his teammates, has caught the attention of England coach Brian McDermott, who will be monitoring their progress closely. The Data Analysis: England's Youthful Options Jack Farrimond, 20, scored in his sole appearance for London Broncos last May and has now announced himself on the big stage. Zach Eckersley, another young winger, looks like a seasoned Super League player and his versatility should see him on the plane to Perth for the World Cup. Noah Hodkinson, a fledgling winger, shone at Wembley, playing his eighth senior game like it was his 80th. The Impact Analysis: A New Era for England Rugby League The Challenge Cup finals have demonstrated that England's future is in good hands, with a new generation of players emerging. This youthful talent will be crucial in the upcoming World Cup, particularly given the heat and challenges that come with playing in Australia, Papua New Guinea, and New Zealand. The Prediction: A Bright Future for England With players like Farrimond, Eckersley, and Hodkinson leading the charge, England's rugby league team has a bright future ahead. The experience gained from the Challenge Cup finals will serve them well in the World Cup, and fans can expect to see more of these young players in the years to come.