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US-Iran Diplomatic Efforts Collapse as Islamabad Talks StallUnited States President Donald Trump has cancelled a planned visit by his envoys Steve Witkoff and Jared Kushner to Pakistan, where indirect talks between the US and Iran remain deadlocked over issues including the blockade of the Strait of Hormuz. The cancellation signals a significant setback in diplomatic efforts to resolve the conflict that has spilled into the larger Middle East region, causing the worst global energy crisis since the 1970s and risking a global recession.Trump Cancels Envoys' Visit to Pakistan"If they want to talk, all they have to do is call!!!" Trump wrote on his social media platform Truth Social on Saturday, signalling that Washington for now would not send negotiators to Pakistan, the country mediating between the longtime adversaries. The US president told reporters in Florida that he scrapped his envoys' visit because the talks involved too much travel and expense to consider what he called an inadequate offer from the Iranians.After the diplomatic trip was called off, Trump claimed Iran "offered a lot, but not enough." On Truth Social, he also wrote that there was "tremendous infighting and confusion" within Iran's leadership, stating "Nobody knows who is in charge, including them." Trump added, "Also, we have all the cards, they have none!"Iran's Position on Blockade and NegotiationsIn Tehran, Iranian President Masoud Pezeshkian reiterated that his government will not enter negotiations while the US maintains a blockade on Iranian ports. In a phone call with Pakistani Prime Minister Shehbaz Sharif on Saturday night, Pezeshkian said Washington "should first remove operational obstacles, including the blockade," before any new talks can begin, according to Iranian news agencies.Meanwhile, during his visit to Islamabad on Friday, Iranian Foreign Minister Abbas Araghchi held separate meetings with Pakistan's army chief, Field Marshal Asim Munir, and Sharif. In a post on Telegram, Araghchi said their discussions covered regional dynamics and Iran's non-negotiable positions without disclosing specifics. He added that Tehran intends to engage with Pakistan's mediation efforts "until a result is achieved."Pakistan's Continued Mediation EffortsDespite hardening public positions from Washington and Tehran, Pakistan's political and military leadership is continuing to mediate, two Pakistani officials said on Sunday, according to The Associated Press news agency. They described the indirect ceasefire contacts as still alive but fragile.Al Jazeera's Kimberly Halkett, reporting from Islamabad, said Pakistani officials are underscoring that the expected return of Araghchi to Islamabad is seen as a "hopeful sign." "What they hope is that this will in fact be something that can be incremental in the process and will advance forward," she reported.Global Energy Crisis Escalates Amid ConflictThe conflict has caused the worst global energy crisis since the 1970s, with significant implications for international markets. The Strait of Hormuz, through which one-fifth of the world's oil and liquefied natural gas supplies were shipped before the war began, has become a central dispute in the conflict.Iranian forces have essentially blocked the Strait of Hormuz, capturing commercial vessels, while the US has intercepted or detained ships suspected of violating its naval blockade of Iranian ports. The naval blockade is seen by Iran as a breach of the ceasefire. Tehran has warned that reopening the Strait of Hormuz is impossible as long as the blockade remains in place.The critical waterway lies within the territorial waters of Iran and Oman. Iran insists on sovereignty over the waterway and has floated the idea of levying tolls while Washington demands full freedom of navigation. The Gulf nations, which export most of their petroleum through the strait, have opposed the Iranian plan to impose tolls.Middle East Tensions Widen as Blockade Dispute PersistsThe US-Iran conflict has spilled into the larger Middle East region, including Lebanon, with both sides continuing to accuse each other of ceasefire violations. While the truce has held for the most part since it began on April 8 after nearly six weeks of US and Israeli strikes on Iran and retaliatory Iranian attacks, tensions remain high.Another key issue in the negotiations is the debate over Iran's stock of enriched uranium. The US and Israel are pushing for zero uranium enrichment and have accused Iran of working towards building a nuclear weapon while providing no evidence for their claims. Iran has insisted its enrichment effort is for civilian purposes only, though it has enriched uranium to 60 percent, a level far higher than what is needed for civilian use.Prospects for Lasting Ceasefire Remain UncertainWith neither Washington nor Tehran showing much willingness to soften their positions, prospects for a diplomatic breakthrough in the US-Israeli war on Iran and securing a lasting ceasefire remain stalled. After repeated threats of restarting the war if Iran did not heed Washington's demands, Trump extended the ceasefire on Tuesday without a set deadline, saying he was in no rush to conclude a peace deal with Iran.Iranian Foreign Minister Araghchi, after departing Islamabad on Saturday, travelled to Oman where he discussed ways to end the conflict with Sultan Haitham bin Tariq al-Said, according to state media. He was then scheduled to continue on to Russia, with Iran's IRNA news agency saying Araghchi is expected to return to Islamabad on Sunday for additional talks.

The LeadThe FA Cup semi-final between Chelsea and Leeds United presents one of the most unpredictable matchups of the tournament, with neither team clearly favored to advance. Chelsea, despite their prestigious status, enters the match on a seven-loss-in-eight run without a permanent manager, while Leeds, battling relegation, remains unbeaten in nearly two months and has proven competitive against top-tier opponents this season.The Historical ContextFor Leeds United, this match carries particular significance as it marks their first FA Cup semi-final appearance since 1987, when they famously lost to Coventry City. The last time Leeds reached the final was under legendary manager Don Revie, highlighting the rarity of this opportunity for the Yorkshire club. Meanwhile, Chelsea's FA Cup pedigree includes multiple triumphs, but their recent managerial instability has cast doubt on their ability to navigate crucial matches.The Current Form AnalysisLeeds' remarkable resurgence against top-tier opponents has been a defining feature of their season, with notable victories including a 3-1 win over Chelsea in December and a 2-2 draw at Stamford Bridge in February. This form suggests they possess the tactical acumen to challenge even struggling Premier League sides. Chelsea, conversely, has shown alarming inconsistency, with players appearing disengaged during recent defeats, raising questions about their collective mentality and commitment under interim leadership.The Managerial SituationChelsea's lack of a permanent manager has created an unstable environment, with Calum McFarlane stepping into the role amid uncertainty. This contrasts sharply with Leeds' established coaching structure, providing a potential psychological advantage for the Yorkshire side. Chelsea supporters may recall successful interim managers from the past, but replicating those achievements with an inexperienced coach in high-stakes circumstances presents a significant challenge.The Tournament SignificanceFor both clubs, this semi-final represents more than just a match—it's an opportunity to salvage their seasons. Chelsea could use FA Cup success to offset their league struggles, while Leeds could achieve a remarkable achievement by reaching their first final in nearly four decades. The winner will face Manchester City on May 16th, setting up the potential for another David versus Goliath scenario should Leeds advance.

The Historic Two-Hour Barrier Broken They call Sabastian Sawe the silent assassin. But it was impossible to ignore the beautiful destruction on the streets of London as the 30-year-old Kenyan became the first athlete to shatter the two-hour barrier in an official race. As Sawe crossed the line on the Mall, the clock showed that he had run 26.2 miles in a staggering 1 hour, 59mins and 30 seconds – 65 seconds faster than the previous best set by Kelvin Kiptum in 2023. The Record-Shattering Performance The world record had not just been destroyed. It had been obliterated. He came. He Sawe. He conquered. "I am feeling good, I am so happy," said Sawe. "It is a day to remember." Sawe's team had insisted their man was in shape, and that he would be helped by wearing the latest pair of Adidas Adios Pro 3 supershoes, which weigh in at just 97 grams – lighter than a baby kitten – and will retail for about £450. But no one expected this. Unprecedented Competition Not long behind him was Ethiopia's Yomif Kejelcha, who was 11 seconds back in his debut marathon. His time would have also shattered the world record. Uganda's Jacob Kiplimo, who came third in 2:00:28, was also inside it too. "I think today, it shows me a lot," Sawe told BBC Sport afterwards. "There is time for everyone. I think I was well-prepared because coming to London for the second time was so important to me." The Science Behind the Speed For the elite racers, the weather at the start was almost perfect for fast times: 11 degrees Celsius, sunny, and with a gentle tailwind over the crucial last few miles. And six men – including the favourites, Sawe and Kiplimo – were determined to take advantage. They hit the 10km mark, just before Cutty Sark, in 28 mins and 25 sec, a shade under world-record pace, and were through halfway in 60:29 secs, 12 seconds down. The Final Push to Glory At this point the men's race looked like being fast but not record-breaking. When the last pacemaker dropped out, though, Sawe and Kejelcha suddenly charged clear at a drinks station, surprising Kiplimo who found himself unable to fight back. By now they were pouring the pace on. Between 30-35km they ran an astonishing 13:54 5km. To put into context, the time is just 12 seconds slower than the world record for a 5km parkrun, set by the Irish international runner Nick Griggs. The Doping Question Addressed Naturally there will be questions about whether we can trust Sawe's record, given the chequered history of Kenyans failing doping tests in recent years. It should be noted, however, that before the Berlin marathon in September, Sawe's sponsors, Adidas, paid the Athletics Integrity Unit £50,000 to test him as many times as possible because they wanted to show he was clean. Not only was Sawe tested 25 times in a few weeks, but his samples were also scrutinised with top-end analysis, including isotope ratio mass spectrometry testing, which is much better at detecting tiny levels of banned drugs. The Women's Race Record The women's race turned into a three-way sprint down the Mall, with the Ethiopian Tigst Assefa defending her title after kicking from home in sight of Buckingham Palace. Her time of 2:15:41 was a women's only-word world record, which applies to races with only women's pace makers but is nearly five minutes slower than the official women's world record. In second place, 12 seconds back, was Kenya's Hellen Obiri, while her compatriot Joyciline Jepkosgei finished third. The Future of Marathon Running Sawe's achievement marks a new era in marathon running, pushing the boundaries of what was once considered humanly possible. With advancements in training techniques, equipment technology, and increasingly sophisticated doping detection methods, we can expect more records to fall in the coming years. The two-hour barrier, once thought to be an insurmountable milestone, has now been officially conquered, opening the door for even more ambitious targets in the sport.

Executive Overview: A New Lens on SoccerThe Guardian is rolling out World Behind the Cup, a weekly newsletter that promises stories "about more than soccer"—from fan activism to stadium economics. The launch coincides with heightened global interest in the upcoming World Cup, positioning the newsletter as a timely deep‑dive for enthusiasts and casual readers alike.Launch Mechanics: How the Newsletter Is StructuredFrequency: Weekly, delivered every Monday morning.Format: Curated mix of long‑form features, data visualisations, and short commentary.Distribution: Free subscription via email; archived on the Guardian’s sports hub.Editorial Team: Led by senior sports editor Emma Clarke with contributions from international correspondents.Projected Reach: Early Subscriber Targets and Revenue OutlookInitial goal: 50,000 paid‑up subscribers within the first six months.Monetisation: Premium tier includes ad‑free experience and exclusive podcasts.Revenue forecast: Expected to generate $1.2 million in the first year from subscriptions and sponsorships.Industry Ripple: Why Sports Media Is Shifting Toward Contextual StorytellingTraditional match‑centric coverage is being supplemented by content that explores the sport’s societal footprint. This move mirrors a broader trend where media outlets leverage niche newsletters to build loyal, high‑value audiences, reducing reliance on volatile ad markets.Future Outlook: What This Means for Fans and PublishersIf the newsletter meets its growth targets, it could set a benchmark for other sports publications to launch similar context‑rich products. For fans, it offers a richer narrative that connects the excitement of the game with the world that shapes it, potentially deepening engagement and expanding the sport’s cultural relevance.

Sawe Shatters Two‑Hour Barrier at the 2026 London MarathonIn a historic sprint through the 42.195 km course, Sabastian Sawe crossed the finish line in 1:59:30, securing victory and the distinction of being the first man to complete a marathon in under two hours.Numbers That Redefined Marathon HistorySawe's time: 1:59:30 – 65 seconds faster than the previous record of 2:00:35 set by Kelvin Kiptum (Chicago, Oct 2023).Second place: Yomif Kejelcha (Ethiopia) – 1:59:41.Third place: Jacob Kiplimo (Uganda) – 2:02:28.All three men finished under the former world record.Women’s winner: Tigst Assefa (Ethiopia) – 2:15:41, a new women‑only world record, beating her previous best by 9 seconds.Women’s podium: Hellen Obiri (Kenya) – 2:15:53 (PB); Joyciline Jepkosgei (Kenya) – 2:15:53 (0.02 s behind Obiri).Implications for Elite Distance RunningThe sub‑two‑hour achievement demonstrates that optimal pacing, mixed‑gender race dynamics, and advances in training can push human limits further than previously thought. It also highlights the growing depth of East African talent, with Kenya and Ethiopia occupying all podium spots in both genders.Wheelchair events continued to showcase dominance: Marcel Hug (Switzerland) claimed his sixth consecutive men’s title, while Catherine Debrunner (Switzerland) secured her third straight women’s win.What the Sub‑Two‑Hour Era Means for Future RacesOrganisers are likely to experiment with more mixed‑gender pacing strategies and technology‑enhanced footwear to replicate these conditions. Athletes worldwide will target the sub‑two‑hour mark, prompting a new wave of sponsorship, training methodologies, and race‑day logistics aimed at shaving seconds off the clock.

The LeadThe bitter rivalry between two of the tech world's most powerful men arrives in court this week, as Elon Musk's lawsuit against Sam Altman and OpenAI heads to trial in Oakland, California. The case is set to feature some of the biggest names in Silicon Valley, and its outcome could affect the course of the AI boom.The Event DetailsMusk's suit, filed in 2024, focuses on the formative years of OpenAI when he, Altman and others co-founded the artificial intelligence company as a nonprofit with a grand purpose. The company's original mission statement declared: "OpenAI is a non-profit artificial intelligence research company. Our goal is to advance digital intelligence in the way that is most likely to benefit humanity as a whole, unconstrained by a need to generate financial return."Musk alleges that Altman, OpenAI's CEO, broke the company's founding agreement by restructuring the company and converting much of it to a for-profit enterprise. Altman and OpenAI counter that Musk, who left the firm in 2018 amid internal disputes and has since started his own rival AI business, is essentially a sore loser.The Data AnalysisThe case carries sizable stakes for OpenAI, which is expected to go public later this year at about a $1tn valuation. Musk is seeking a range of remedies that include the removal of Altman and OpenAI president Greg Brockman and more than $134bn in damages, which Musk says would be redistributed to OpenAI's non-profit arm.Jury selection in the trial starts on Monday at a federal courthouse in Oakland, with Judge Yvonne Gonzalez Rogers overseeing the proceedings. The trial is expected to last two to three weeks.The Impact AnalysisWhile the central disagreement may concern convoluted corporate structures and contractual agreements, the trial itself promises to be an explosive high point in the feud between the two tech billionaires. Court filings featuring emails, texts and diary entries involving Musk and Altman have already hinted at dramatic episodes in OpenAI's history that will be detailed in full, and are rife with personal animosities and professional disputes that have shaped the AI industry.The case also represents a critical moment for the AI industry, as it could set precedents for how AI companies are structured and governed, particularly those that begin with nonprofit missions but later transition to for-profit models.The PredictionRegardless of the trial's outcome, the public airing of this dispute is likely to have lasting effects on both Musk's and Altman's reputations in the tech industry. The trial may also influence how future AI companies are structured and funded, with potential investors becoming more cautious about supporting organizations that transition from nonprofit to for-profit models.The case could also accelerate the development of regulatory frameworks for AI development and deployment, as the high-profile nature of this dispute draws increased attention from policymakers and regulators concerned with the governance of powerful AI systems.

The Government's Energy Calculations ClashThe UK government is facing internal divisions over the energy demands of AI datacentres, with two key departments offering vastly different projections. While the Department of Science, Innovation and Technology (DSIT) forecasts that AI datacentres will consume 6GW of electricity by 2030, the Department of Energy Security and Net Zero (DESNZ) projects usage of less than a tenth of that amount. This discrepancy raises questions about how the UK can simultaneously pursue its ambition to become an AI superpower while meeting decarbonization targets.Conflicting Projections from Key DepartmentsThe DSIT's "UK compute roadmap," published in 2025, sets out a "bold, long-term plan to transform our national compute ecosystem" by building AI datacentres. The document explicitly states: "We forecast that the UK will need at least 6GW of AI-capable datacentre capacity by 2030." This ambitious plan involves creating multiple AI growth zones across the country, each requiring at least 500MW of electricity.In contrast, DESNZ, which is responsible for the UK's carbon budget and climate targets, has incorporated AI datacentres into broader forecasts for the energy use of Britain's "commercial services" sector. These projections suggest the entire sector's energy use will grow by just 528MW between 2025 and 2030 – equivalent to adding the consumption of 1.7m homes by the end of the decade.The DESNZ has stated it does not hold separate projections for datacentre growth, despite the government's commitment to building significant AI infrastructure.The Scale of the DiscrepancyThe difference between the departments' projections is staggering. DSIT's estimate of 6GW for AI datacentres alone is more than ten times higher than DESNZ's projection for the entire commercial services sector's growth. This means that if DSIT's projections are accurate, the energy demands of AI datacentres would far outpace the government's current plans for grid expansion and decarbonization.Each proposed AI growth zone would require at least 500MW of electricity – an amount only slightly less than DESNZ's forecast for the increase in energy usage of the entire commercial services sector. This suggests that even a handful of these zones would strain the government's energy planning.Revised Emissions Figures and ControversyThe controversy surrounding these projections deepened when DSIT revised its figures for the carbon emissions of AI datacentres. Originally, DSIT's projections for the carbon emissions of additional AI computing capacity were between 0.025m and 0.142m tonnes of carbon equivalent (MtCO₂) – below 0.05% of Britain's projected emissions.After questions were raised about the plausibility of these figures, the document containing them was removed from the government website. Then, after inquiries from The Guardian, DSIT updated its numbers significantly. In a statement posted online, the department acknowledged: "The UK's cumulative 10-year greenhouse gas emissions from AI compute could range from 34 to 123 MtCO₂ – this is around 0.9-3.4% of the UK's projected total emissions over the 10-year period."This represents more than a hundredfold increase in the estimated emissions, raising serious questions about the initial calculations and the transparency of the government's planning process.Critics Question Government Competence and Corporate InfluenceThe conflicting projections have drawn sharp criticism from experts and observers. Tim Squirrell, the head of strategy for the NGO Foxglove, commented: "The government's cluelessness over the environmental impact of datacentres would be laughable, if it weren't so alarming."Cecilia Rikap, a researcher at University College London, offered two possible interpretations of the "misalignment": either DESNZ and DSIT are incompetent, or there's some kind of "magical thinking about AI and big tech." She added: "Either way, the episode uncovers how these corporations control not only the AI value chain, but also the UK government."Foxglove filed an environmental impact assessment request with DESNZ in January, asking how the department had incorporated AI datacentres into its projections for Britain's emissions. The response, which referred to broader forecasts for the commercial services sector, did not address the specific concerns raised.Future of UK AI Strategy and Climate GoalsThe UK government appears to be attempting to balance competing priorities: becoming a leader in artificial intelligence while meeting international climate commitments. Carbon budget 7, which will outline the UK's climate plans for the coming years, is set to be released this summer and may provide more clarity on how these objectives will be reconciled.A spokesperson for DESNZ noted that "datacentre emissions are factored into our modeling, including for carbon budget 7," and mentioned that "The AI Energy Council is exploring opportunities to attract investment and support the development of clean power for datacentres."However, the significant discrepancy between government departments suggests that the UK's strategy for becoming an AI superpower may be developed without adequate consideration of its environmental implications. As the government moves forward with its AI ambitions, the tension between technological advancement and climate responsibility will likely remain a central challenge.

The Iran War as a Catalyst for RenewablesThe fallout from the Iran war is driving countries to boost homegrown energy reliability and opens an opportunity for progress on clean generation at the next UN climate summit, says the lead negotiator at the talks.Australian Climate Minister Chris Bowen, the new president of negotiations at the COP31 conference in Turkey in November, said the energy market disruption should be seen as a global fossil fuel crisis—the second in four years, following Russia’s invasion of Ukraine in 2022—and it was having an acute impact in Asia.The Unusual Co-Presidency of COP31COP31 faces the additional challenge of being run by two countries with potentially differing views on what should be achieved. After a long standoff between Turkey and Australia, an unusual compromise agreement was struck under which the former would host the conference in Antalya and the latter would lead the formal negotiations between delegates from nearly 200 countries.Co-hosting Model: Turkey is ultimately in charge under the UN framework, but Australia leads the negotiations.Key Countries Present: Fossil fuel producers attending the Santa Marta conference include Canada, Nigeria, Mexico, Brazil, and Turkey.Major Emitters Absent: The biggest national emitters—China, the US, India, and Russia—are not attending.The Economic Impact of the Second Fossil Fuel CrisisBowen described the current market disruption as a global fossil fuel crisis—the second in four years, following Russia’s invasion of Ukraine in 2022. He noted it was having an acute impact in Asia.However, he emphasized that Asian leaders and ministers stressed in private meetings that the upheaval in liquid fuel supply underlined the need to transition to renewable energy and electrification to reduce reliance on imported oil.Why Energy Sovereignty is Driving the Renewables PushBowen argued that the crisis is not a call to return to fossil fuels. “No one has said this crisis is a reminder that we need to be more reliant on fossil fuels,” he told the Guardian.Instead, there is a real appetite to emphasise reliability and energy sovereignty this year. Bowen believes this opens more opportunities for COP31 to advance the agenda on phasing out fossil fuels, a topic previously stalled by petrostates like Saudi Arabia and Russia.The Future of Incremental Progress at Climate SummitsBowen believes consensus is still possible in an increasingly chaotic and war-torn world. He stated that commitments made since the Paris agreement in 2015 had lowered projected global heating from 4C to about 2.5C above preindustrial levels if existing promises are fulfilled.“You can keep the process alive and hope for a big step forward,” he said. “I think Cops are unlikely now to be Paris or Copenhagen – you know, outstanding successes or heartbreaking failures. Cops are more likely to be incremental progress. The question is how big that progress is.”

In a dramatic interruption of the annual White House Correspondents’ Dinner, gunfire erupted at the Washington Hilton on Saturday night, 26 April 2026, forcing President Donald Trump, First Lady Melania Trump, Vice President JD Vance and cabinet members to be evacuated.The Sudden Attack at the Washington HiltonThe dinner, a tradition celebrating the First Amendment, was halted when a man armed with a shotgun fired several rounds into the ballroom. A Secret Service agent was hit but survived unharmed thanks to a bullet‑proof vest. The shooter, later identified as Cole Tomas Allen, attempted to breach the security line before being subdued.Location: Washington Hilton, Washington, DCTime: Approximately 22:30 EDTShots fired: At least five roundsVictim: One Secret Service agent (uninjured)Key Facts and Figures from the IncidentAuthorities released limited data, but the following details have been confirmed:Suspect age: 31Origin: Torrance, CaliforniaCustody status: In police custody, awaiting chargesPresident’s statement: “Great shape,” posted on Truth SocialSecurity Implications for High‑Profile Political EventsThe incident revives concerns about the vulnerability of high‑visibility gatherings. While the Secret Service’s rapid response prevented casualties, the fact that a gunman could approach the ballroom underscores potential gaps in perimeter security and venue screening procedures.Historical context: The Washington Hilton was also the site of the 1981 Reagan assassination attempt.Policy response: Officials have pledged a review of security protocols for future White House events.What Comes Next for the White House Correspondents’ Dinner?The White House announced the dinner will be rescheduled within 30 days. In the meantime, investigations are ongoing, with charges expected to include unlawful possession of a firearm and attempted assault on a federal officer.Analysts predict heightened security measures for all upcoming political gatherings and a possible shift toward more controlled, smaller‑scale events.