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    Paris Hilton’s $63 million mansion deal helps power LA real estate market

    Los Angeles real estate dominated the list of the top 10 most expensive homes sold in June, according to Redfin.
    Paris Hilton and her husband, Carter Reum, led the way, buying a $63 million Beverly Hills mansion that once belonged to Mark Wahlberg.
    Buyers displaced by the fires remain the big drivers of luxury real estate sales in LA, but foreign buyers, especially from China, are also coming back, said agent Nicole Plaxen.

    Agent Nicole Plaxen of The Beverly Hills Estates said she’s holding “constant showings” of this $118 million mansion in Bel Air.
    Credit: The Beverly Hills Estates

    A version of this article first appeared in CNBC’s Inside Wealth newsletter with Robert Frank, a weekly guide to the high-net-worth investor and consumer. Sign up to receive future editions, straight to your inbox.
    When actor and entrepreneur Mark Wahlberg sold his Beverly Hills mansion in 2023 for $55 million, many brokers said the price was low.

    Wahlberg had listed the 30,500-square-foot home for $87.5 million but slashed the price in order to close before Los Angeles’ looming mansion tax took effect.
    Perhaps he should have waited.
    That home was the most expensive sale in June, flipped for $63 million, giving the sellers a profit even after accounting for LA’s mansion tax. The buyers this time around: Paris Hilton and her husband, Carter Reum, whose Malibu home was destroyed in the wildfires.

    US media personality Paris Hilton attends the Vanity Fair Oscars Party at the Wallis Annenberg Center for the Performing Arts in Beverly Hills, California, on March 10, 2024.
    Michael Tran | Afp | Getty Images

    Los Angeles real estate dominated the charts of the top 10 most expensive homes sold in June, according to Redfin. Five of the 10 top sellers were in California, with three in Beverly Hills, one in Bel Air and one in Atherton.
    Nicole Plaxen, an agent with The Beverly Hills Estates, said buyers displaced by the fires remain the big drivers of luxury real estate sales in LA. But she said rising demand from foreign buyers, especially from China, is also fueling deals in Beverly Hills and Bel Air.

    “I see this strength continuing based on the activity I’m seeing right now,” she said. “We’ve been showing every single day nonstop.” She said her $118 million listing on Bel Air Road and $68 million one on Flicker Way have both seen strong interest.

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    Plaxen was a listing agent on the sale of a $32 million LA spec home to Richard Saghian, the CEO of Fashion Nova. Saghian will use the property as a temporary home while he finishes improvements on his Bel Air megamansion known as The One. Saghian bought The One, which spans over 100,000 square feet, at auction for $126 million in 2022 — $141 million with fees and commissions. 
    Plaxen said another LA property recently sold off market for around $60 million and other high-end listings are rapidly coming onto the market.
    “People are not just looking, they’re putting pen to paper,” she said.
    Florida, which typically dominates the top 10 lists, had three top 10 sales in June, including the $38.8 million sale of a Palm Beach spec house.

    Here are the other top 10 listings in the U.S. in June, according to Redfin:

    71 Beverly Park, Beverly Hills, CA 90210: Sold for $63.1 million
    55 E. San Marino Dr., Miami Beach, FL 33139: Sold for $46 million
    1742 S. Ocean Blvd., Palm Beach, FL 33480: Sold for $38.8 million
    9 W. 54th St., New York, NY 10019: Sold for $38.2 million
    1806 US Highway 50, Unit 2, Glenbrook, NV 89413: Sold for $37.5 million
    690 Island Dr., Palm Beach, FL 33480: Sold for $33 million
    1120 Wallace Ridge, Beverly Hills, CA 90210: Sold for $32 million
    750 Lausanne Rd., Los Angeles, CA 90077: Sold for $32 million
    1414 Donhill Dr., Beverly Hills, CA 90210: Sold for $32 million
    96 Ridge View Dr., Atherton, CA 94027: Sold for $31.8 million More

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    Warner Bros. Discovery announces post-split companies will be ‘Warner Bros.’ and ‘Discovery Global’

    Warner Bros. Discovery’s streaming and studios division will be called “Warner Bros.” and its global networks segment will be called “Discovery Global” when it splits into two companies.
    The media giant also announced the members of new executive leadership teams for both businesses.
    The company expects to separate in mid-2026.

    David Zaslav, President and CEO of Warner Bros. Discovery, attends the Milken Institute Global Conference 2025 in Beverly Hills, California, U.S., May 7, 2025.
    Mike Blake | Reuters

    Warner Bros. Discovery on Monday announced the corporate names and leadership teams of its two future businesses as the company prepares to split in mid-2026.
    Its streaming and studios division will be called “Warner Bros.” and its global networks segment will be named “Discovery Global.”

    Warner Bros. will house its movie properties, including DC Studios and its streaming service HBO Max. Meanwhile, Discovery Global will include its entertainment, sports and news networks, including CNN, TNT Sports in the U.S., Discovery, the Discovery+ streaming service and Bleacher Report.
    “Over the past several years, we have made important strides across the business, launching and investing in a profitable, global streaming service and reinvigorating our studios to return them again to an industry leading position,” said WBD President and CEO David Zaslav in a statement.
    The company announced the split last month as WBD tries to navigate an industry-wide shift in consumers’ viewing habits from traditional cable to streaming. The spinoff will create two publicly traded businesses, following a similar move by Comcast to split off its cable assets, including CNBC, in the coming months.
    The new names announced by Warner Bros. Discovery are a callback to the two entities that existed before the company’s merger: WarnerMedia and Discovery, Inc. That deal completed in 2022.
    WBD also announced its top executives for both divisions, including 13 leaders for Warner Bros. and 16 at Discovery Global. Zaslav will lead Warner Bros., while current Warner Bros. Discovery CFO Gunnar Wiedenfels will become CEO of Discovery Global.

    “With our unmatched portfolio of storytelling IP coupled with our incredible creative partners, and now an executive team of proven, bold, and committed creative and corporate leaders, we are in a strong position to launch and continue to meaningfully grow a company worthy of our storied past,” Zaslav said.
    Disclosure: Comcast NBCUniversal is the parent company of CNBC. More

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    Las Vegas Sphere to screen ‘The Wizard of Oz’ in new immersive film experience

    The Las Vegas Sphere will soon screen 1939’s “The Wizard of Oz” in a new immersive film experience.
    Engineers used artificial intelligence “outpainting” to expand the original film frames to fit the immersive space, CBS Sunday Morning reported.
    “The Wizard of Oz” experience opens to the public on Aug. 28.

    Jack Haley (1898 – 1979) as the Tin Man, Bert Lahr (1895 – 1967) as the Cowardly Lion, Judy Garland (1922 – 1969) as Dorothy, Ray Bolger (1904 – 1987) as the Scarecrow and Frank Morgan (1890 – 1949) as the Doorman to the Emerald City in “The Wizard of Oz.”
    Silver Screen Collection | Moviepix | Getty Images

    The Las Vegas Sphere will soon screen 1939’s “The Wizard of Oz” in a new immersive film experience.
    The project places viewers inside the world of Oz using the Sphere’s 160,000-square-foot wraparound screen. The film will play in 16K resolution with full spatial audio using 167,000 speakers and haptic seating, according to a June press release.

    In a partnership with Google Cloud, engineers used AI “outpainting” to expand the original film frames to fit the immersive space, according to an April press release.
    “Our standard on this was not to modify the film at all, but to try and bring you into [it] as if you were in the studio when it was shot,” James Dolan, Sphere Entertainment CEO, told CBS Sunday Morning.
    Glenn Derry, MSG Ventures executive vice president and visual effects artist, is in charge of the 4D effects, such as motion, wind, water and scent, to make audiences feel like they are in Oz, CBS reported. Derry told CBS Sunday Morning that his team used technology to bring in fog and wind effects to mimic tornadoes that are seen in the movie.
    “The Wizard of Oz” experience opens to the public on Aug. 28.
    The Las Vegas Sphere opened in September 2023 and has a capacity of roughly 20,000. About 10,000 of the seats in the arena have haptic technology, according to Sphere Entertainment. The venue has garnered attention since its opening for impressive live concerts and unique visuals.

    It’s previously screened films including “Postcard From Earth.”

    Don’t miss these insights from CNBC PRO

    Correction: This story has been to updated to correct that the Las Vegas Sphere has previously screened films. More

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    China’s latest AI model claims to be even cheaper to use than DeepSeek

    Startup Z.ai, formerly known as Zhipu, announced Monday that its new GLM-4.5 AI model would cost less than DeepSeek to use.
    Like DeepSeek, the new model is also open source and can be downloaded for free.
    At about half the size of DeepSeek’s model, GLM-4.5 only needs eight Nvidia H20 chips to operate, Z.ai CEO Zhang Peng told CNBC on Monday.

    The World Artificial Intelligence Conference kicked off in Shanghai on Saturday, July 26, 2025.
    Nurphoto | Nurphoto | Getty Images

    BEIJING — Chinese companies are making smarter artificial intelligence models that are increasingly cheaper to use, echoing key aspects of DeepSeek’s market-shaking breakthrough.
    Startup Z.ai, formerly known as Zhipu, announced Monday that its new GLM-4.5 AI model would cost less than DeepSeek to use. In contrast to the logic underlying existing AI models, Z.ai said its new GLM-4.5 is built on what’s known as “agentic” AI, meaning that the model automatically breaks down a task into sub-tasks in order to complete it more accurately.

    The new model is also open sourced, meaning it is free for developers to download and use.
    At about half the size of DeepSeek’s model, GLM-4.5 only needs eight Nvidia H20 chips to operate, Z.ai CEO Zhang Peng told CNBC on Monday.
    That’s the chip Nvidia customized for China in order to comply with U.S. export controls. The chipmaker said this month that the U.S. will allow it to resume those China sales after a three-month pause, but it’s unclear when those shipments will begin.
    Zhang said the company doesn’t need to buy more of the chips as it has enough computing power for now, but declined to share how much Z.ai spent on training the AI model. Details will be released later, he said.

    Back in January, DeepSeek had rattled global investors with its apparent ability to defy U.S. chip restrictions and create an AI model that not only rivaled U.S.-based OpenAI’s ChatGPT, but also undercut it in training and operating costs.

    DeepSeek claimed training costs for its V3 model were less than $6 million, although some analysts said that figure was based on the company’s hardware spend of more than $500 million over time.
    Z.ai said that for its new GLM-4.5 model, it would charge 11 cents per million input tokens versus 14 for DeepSeek R1; and 28 cents per million output tokens versus $2.19 for DeepSeek. Tokens are a way of measuring data for AI model processing.
    Earlier this month, Alibaba-backed Moonshot released Kimi K2, which claimed to beat OpenAI’s ChatGPT and Anthropic’s Claude on certain coding capabilities. Kimi K2 charges 15 cents for every 1 million input tokens, and $2.50 per 1 million output tokens, according to its website.

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    In late June, OpenAI named Zhipu in a warning about Chinese AI progress. The U.S. has also added the startup to its entity list that restricts American companies from doing business with it.
    Z.ai launched in 2019 and is reportedly planning an initial public offering in Greater China.
    The startup has raised more than $1.5 billion from investors including Alibaba, Tencent and Qiming Venture Partners, according to PitchBook. Aramco-backed Prosperity7 Ventures as well as municipal funds from the cities of Hangzhou and Chengdu are also among Z.ai’s backers, the database showed.
    In the last few weeks, several other Chinese companies have announced new, open-source AI models. During the World AI Conference in Shanghai, Tencent released the HunyuanWorld-1.0 model for generating three-dimensional scenes for game development. Last week, Alibaba announced its Qwen3-Coder model for writing computer code. More

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    UnitedHealth aims to reassure investors as profits plunge, DOJ investigates its Medicare business

    UnitedHealth’s second-quarter earnings comes two and a half months since Chairman and CEO Stephen Hemsley retook the role of chief executive.
    Investors will be watching for how Hemsley plans to stabilize the company’s embattled Medicare Advantage program and Optum Health physician practices.
    The company pledged to provide new guidance on 2025 earnings with the release, after suspending its outlook in May following an abrupt change of leadership.

    UnitedHealth Group Chairman and CEO Stephen Hemsley will face the first real test Tuesday of his ability to regain investor confidence as the largest private U.S. insurer reports earnings.
    The Dow component has seen its share price cut nearly in half since mid-May, with the stock on pace for its worst year in more than a decade, after earnings in its flagship Medicare program and Optum Health physician practices plummeted. That led to the abrupt resignation of former CEO Andrew Witty, forcing the company to reinstate ex-CEO Hemsley to replace him and suspend earnings guidance. On top of that, the company is facing criminal and civil Department of Justice investigations into its Medicare billing practices.  

    As UnitedHealth faces challenges on multiple fronts, it sits in a “perfect storm,” said Mizuho Securities analyst Ann Hynes. Now, investors want to know how Hemsley plans to steer the company out of the whirlwind, after assuring them last June that “we’re humbly determined to earn back your trust and your confidence.”
    Here are three key things investors will be looking for from the company’s earnings report.

    The big number: 2025 guidance

    More so than the second-quarter numbers, analysts are focused on UnitedHealth’s outlook for the full year. Hemsley told investors the company would provide an update on 2025 earnings guidance, after it suspended its forecast in May.
    Analysts expect UnitedHealth to post adjusted full-year earnings of $21.26 per share, according to consensus estimates from LSEG. Estimates range from a low of $18 per share to a peak of $26.44 a share.
    “Anything below $18 — that would be viewed as a negative by the street,” Hynes said

    RBC Capital Markets analyst Ben Hendrix has set his estimate above consensus at $23.36, but said Wall Street remains bearish on UnitedHealth.
    “While we base our more optimistic outlook on management’s assertion that Medicare Advantage remains profitable with the 3% low-end of target MA margin in sight for 2026, clients we’ve spoken to have expressed concern over continued margin compression in OptumHealth and accelerating (medical cost) trend in core Medicare Advantage,” he wrote in a note earlier this month.

    Medicare Advantage and Optum Health outlook

    Analysts are also focused on how the company plans to stabilize its physician practice unit, Optum Health. For years, it helped UnitedHealth outperform its peers in its flagship Medicare Advantage program, by leveraging its 90,000 employed or affiliated doctors to treat patients on UnitedHealth’s own plans.
    “Investors with duration were investing in United really for the power of … Optum Health, the power of United steering their own Medicare Advantage members, extracting considerable margin that they hadn’t been able to before,” said Baird analyst Michael Ha.
    But in the first quarter this year, Optum Health saw a sharp decline in profits. Analysts said the plunge was due in part to a Biden-era change in Medicare reimbursement standards known as V28, which is making it harder for insurers and doctors to bill for extra services.
    Mizuho’s Hynes said prior billing coding rules left a lot more room for plans to add billing codes related to chronic conditions, such as overall heart conditions, which would provide a higher risk score and reimbursement rate. Under the new V28 rule the billing codes are more specific, closing loopholes that could boost reimbursement.
    “V28 is very black and white, so you don’t have that kind of ability to add codes, and a lot of codes are removed,” she said, adding that has now “led to a structural shift in margins for Optum Health.”
    But Ha noted the V28 changes began in 2024, at a time when seniors started utilizing more care. Many of UnitedHealth’s Medicare Advantage competitors made adjustments over the last year to address the shift.  The sudden collapse of Optum Health margins in the first quarter appears to have caught UnitedHealth off guard.
    “I think it’s an example of misexecution. They knew the headwind heading into the year and even well before then, but for one reason or another couldn’t find the offset,” Ha said. “We’re still confident that Optum Health and United can recover and rebuild unit economics, but we think over the next one to two years, it may potentially worsen.”

    Legal and regulatory issues

    The company got out ahead of the earnings report on Thursday, acknowledging in an SEC filing that its Medicare program billing practices face criminal and civil probes by the Department of Justice. 
    UnitedHealth said the company is cooperating the with the investigations, first reported by the Wall Street Journal. It also noted that in March, a court-appointed special master ruled in the company’s favor in a case involving similar allegations brought by the DOJ during the first Trump administration.
    Hynes believes investor concern over the DOJ probes has been overblown.
    “The stock is trading like the government’s going to kick them out of Medicare and Medicaid, and the likelihood of that is zero, in my view,” she said. “It will probably end up with them writing a check and doing a Corporate Integrity Agreement … that’s what has happened in the past.”
    But the shooting death of UnitedHealth executive Brian Thompson last December, which prosecutors allege was carried out by a gunman who was motived by insurance denials, unleashed a groundswell of public criticism of health insurers’ practices. 
    Former whistleblower Wendell Potter, who has criticized industry practices after a career at Cigna, said the pressure on large insurers like UnitedHealth likely will not cease. Regulatory scrutiny in Congress has increased on both sides of the aisle, as Washington grapples with high health and drug costs in Medicare, Medicaid and other government health programs.
    “A lot of the members of Congress who are doctors or Republicans, some are pharmacists, and they see firsthand the heavy hand of these companies,” said Potter, president of the Center for Health and Democracy. “And so you’re seeing interest by Republicans, and I’ve not seen that before.”
    In June, UnitedHealth announced that it had hired third party auditors to conduct a review of the company’s practices in health insurance and pharmacy benefits services, in an effort “to provide our stakeholders transparency and confidence” in the company’s business practices.
    The company told CNBC it will not have many details to offer about that audit during the second-quarter earnings call. It does not expect the review to be completed until the end of the third quarter of this year. More

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    Quantum computing firm IonQ hires former JPMorgan Chase applied research head

    IonQ has hired the former head of applied research at JPMorgan Chase to help corporate clients of the quantum firm adopt next-generation hardware, algorithms and security, CNBC has learned.
    Marco Pistoia, who was head of JPMorgan’s internal research group from 2020 to this year, will be joining IonQ as senior vice president of industry relations.
    In his new role, Pistoia will report directly to IonQ CEO Niccolo de Masi and focus on helping corporations adopt both quantum computing and quantum-safe encryption.

    Marco Pistoia, Global Technology’s Head of Applied Research and Engineering at JP Morgan.
    Source: JP Morgan

    IonQ has hired the former head of applied research at JPMorgan Chase to help corporate clients of the quantum firm adopt next-generation hardware, algorithms and security, CNBC has learned.
    Marco Pistoia, who was head of JPMorgan’s internal research group from 2020 to this year, will join IonQ as senior vice president of industry relations, the quantum computing firm is expected to announce on Monday.

    JPMorgan, the largest U.S. bank by assets, recently overhauled the leadership of its research group, which worked on quantum computing and other advanced technologies. Quantum computing has the potential for tremendous advances over traditional computing, and tech giants as well as small publicly traded companies are racing to commercialize it.
    IonQ is one of the larger examples of pure-play quantum companies. The company and competitors including Rigetti Computing and D-Wave have seen their shares surge in the past year, fueled by excitement in the nascent field.
    In his new role, Pistoia will report directly to IonQ CEO Niccolo de Masi and focus on helping corporations adopt both quantum computing and quantum-safe encryption, he said during an interview last week.

    ‘Huge risk’

    A sufficiently powerful quantum computer could theoretically break the encryption methods that keep the world’s financial data secure.
    “There is a huge risk that quantum poses against cryptography, so we need the entire world to transition to quantum-safe cryptography,” Pistoia said.

    Bad actors could “take any public key and reverse-engineer the corresponding private key,” he said.
    The advent of a commercially usable quantum computer is rapidly approaching, according to Pistoia.
    “I believe that usable quantum computers are much closer now; we are talking about two to three years from now,” he said.
    Pistoia said that he hoped to continue collaborating with JPMorgan on quantum projects, as well as with other financial firms.
    JPMorgan declined to comment on the matter. More

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    Where is Nvidia? Chinese rivals take the limelight at major AI event in Shanghai

    U.S. chip giant Nvidia didn’t have a booth at the World AI Conference that opened Saturday in Shanghai.
    Its China rival, Huawei, had a large display — focused on its Ascend AI chips — near the venue’s entrance.
    Tesla, Google, Amazon Web Services and Siemens were among the U.S. and European companies with booths at the AI conference.

    Chinese telecoms giant Huawei showed off its Ascend chips and system for powering artificial intelligence models at the World AI Conference in Shanghai on July 26, 2025.
    CNBC | Evelyn Cheng

    BEIJING — Less than two weeks after Nvidia CEO Jensen Huang’s high-profile visit to Beijing, the U.S. chipmaker was conspicuous by its absence at China’s biggest AI event of the year.
    Despite renewed hopes this month of selling its less advanced H20 chips to China again, Nvidia didn’t have a booth at the World AI Conference that opened Saturday in Shanghai. The company declined CNBC’s request for comment.

    In contrast, Nvidia’s China rival, Huawei, had a large display — focused on its Ascend AI chips — near the venue entrance. Huang has called Huawei “one of the most formidable technology companies in the world,” while warning that it could replace Nvidia in China if U.S. sticks with its export curbs on Beijing.
    The telecoms giant showed off for the first time the hardware for its computing system that links 384 Ascend chips together to power AI model training and use. Huawei is marketing the product as “Atlas 900 A3 SuperPoD.”
    Earlier this year, research firm SemiAnalysis pointed out that even though one Ascend chip may be less powerful than Nvidia’s most advanced Blackwell chip, an early look at a Huawei system similar to the one unveiled in Shanghai more than offsets the disparity by piling in five times more chips than Nvidia does in its GB200 computing system. But there’s an efficiency cost as Huawei’s systems require far more power than Nvidia’s to operate, the report said.
    Huawei is far from being the only Chinese player in the complex supply chain for advanced chips. For example, semiconductor designer Moore Threads and startup Yunsilicon both had booths at the AI expo center in Shanghai.

    Many of the exhibitors from startups to giants such as Tencent and Alibaba showed off AI applications in robotics, smart glasses and translation apps. Overall, there was less talk at the expo about needing Nvidia to power their products.

    Internet tech company NetEase’s Youdao business displayed a handheld bar device that uses AI to help students study material including that for college entrance exams.
    The device currently uses both AI based in the cloud and “edge” AI that runs on the device, said Gao Huituan, product manager of educational learning hardware at Youdao.
    Looking ahead, he said that new AI chips are becoming more power efficient and are able to support different types of products.
    While Nvidia’s chips focus more on cloud computing power, “many domestically made, very excellent chip manufacturers are working on some edge devices,” he said in Mandarin, translated by CNBC. “Now everyone has relatively good computing power.”

    Straddling tech tensions

    Nvidia has become the world’s most valuable company, riding on the demand for its chips that have been heled drive the latest generative AI breakthroughs.
    The company had to stop sales to China in April due to new U.S. restrictions, following tougher export controls over the last three years aimed at reducing China’s AI capabilities and which have prevented Nvidia from selling its most advanced chips to the country. The company tailored the H20 for China, which Huang has said is a $50 billion market.

    Tesla, Google, Amazon Web Services and Siemens were among the U.S. and European companies with booths at the AI conference in Shanghai.
    Nvidia had a booth in Beijing earlier this month at an annual supply chain conference, which coincided with Huang’s third visit to China this year and news that the U.S. will allow the chipmaker to resume sales of the H20 chips to China.
    But the company has not shared when shipments would begin or how many orders it had received from Chinese customers.
    “Nvidia is the model in (AI) GPU development for the short to medium term not just because of H20, but also because of flagship products like the GB300,” Phelix Lee, senior equity analyst at Morningstar, said in an emailed statement. “The return of H20 could help Nvidia to remain as the de facto standard in AI datacenter systems, especially when domestic alternatives are lurking.”

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    Beijing has been striving to boost tech self-sufficiency as it has faced U.S. restrictions accessing high-end tech. The country over the weekend also took another step toward promoting its AI standards globally. 
    Chinese Premier Li Qiang announced plans for a global AI cooperation organization during a speech at Saturday’s opening ceremony. The initial headquarters will likely be in Shanghai, state media said.
    The plans come just days after U.S. President Donald Trump announced an American action plan for AI that included calls to reduce alleged “woke” bias in AI models and support the deployment of U.S. tech overseas. More

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    Europe seeks to end its Trumpian trade nightmare

    EVER SINCE President Donald Trump unveiled his Liberation Day tariffs in April, the world’s biggest trading relationship had been on the rocks. The European Union swung from trying to sweet-talk America into making a deal, to threatening retaliation. On July 27th dealmaking won out. At his golf course in Scotland the president and Ursula von der Leyen, the head of the European Commission, unveiled the outline of a preliminary trade agreement. The bloc has pulled off a tricky balancing act: making enough concessions to keep Mr Trump happy, while limiting the economic damage. More