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The U.S. military announced that, starting at 14:00 GMT on Monday, it will enforce a blockade of every Iranian port, a step taken after President Donald Trump ordered a naval closure of the Strait of Hormuz—the waterway through which roughly one‑fifth of global crude oil normally flows. The blockade comes on the heels of stalled peace negotiations in Islamabad, where talks between Washington and Tehran collapsed without an agreement despite a prior cease‑fire pledge. Trump’s escalation has already driven crude prices above $100 per barrel and unsettled Asian equity markets, with the Nikkei 225 down 0.84%, the Topix slipping 0.42% and South Korea’s Kospi falling 1.83%. Iran’s response is equally forceful. The Islamic Revolutionary Guard Corps warned that any vessel entering the strait would be deemed a breach of the cease‑fire and dealt with “harshly and decisively,” insisting it has “full control” and threatening a “deadly vortex” for any misstep. Navy chief Shahram Irani dismissed Trump’s threat as “ridiculous and funny,” while state television said Iranian forces are closely monitoring U.S. movements. Foreign Minister Abbas Araghchi lamented “maximalism, shifting goalposts, and blockade” that undermined a near‑final Islamabad memorandum, quoting, “Good will begets good will. Enmity begets enmity.” Parliament speaker Mohammad Bagher Ghalibaf pledged resistance and mocked U.S. gasoline prices, posting a map of Washington‑area pump prices and predicting nostalgia for $4‑$5 gas. U.S. Central Command clarified that the blockade will stop all vessels bound for or from Iran, while traffic to non‑Iranian ports will continue unhindered. Trump also warned that any ship that has paid an “illegal toll” to Iran will be intercepted on the high seas, and he publicly criticized Pope Leo XIV for urging an end to the conflict. In Lebanon, Israeli airstrikes have killed at least five people, bringing the country’s overall death toll to 2,055. Hezbollah retaliated with a rocket barrage aimed at northern Israeli towns, citing violations of a cease‑fire. The United Nations Interim Force in Lebanon (UNIFIL) reported that an Israeli tank rammed peace‑keeping vehicles twice in the south. Israel’s Prime Minister Benjamin Netanyahu visited troops on the Lebanese border, claiming that Hezbollah’s invasion threat has been neutralized, though he acknowledged that hostilities continue within the security zone. On the energy front, shipping through the Hormuz corridor has “immediately halted,” according to Lloyd’s List, with several vessels turning back after the blockade announcement, further tightening global oil supplies.

The United States military confirmed that, beginning at 10 a.m. Eastern Time (14:00 GMT) on April 13, all maritime traffic entering or leaving Iranian ports will be blocked. The directive, issued by U.S. Central Command (CENTCOM), targets vessels of every nation operating in the Gulf and the Gulf of Oman, but explicitly excludes ships merely transiting the Strait of Hormuz to non‑Iranian ports, marking a narrower scope than former President Donald Trump’s broader strait‑wide threat. This decisive action follows the abrupt end of marathon peace talks in Islamabad, where negotiators failed to secure a memorandum of understanding with Tehran. The stalemate has revived fears of renewed hostilities, prompting the U.S. to leverage maritime pressure as a bargaining chip. Financial markets reacted sharply: U.S. crude oil prices surged 8 % to $104.24 per barrel, while the benchmark Brent crude rose 7 % to $102.29. The spikes reflect investor anxiety over potential disruptions to the flow of oil and liquefied natural gas that currently passes through the Strait of Hormuz, a chokepoint responsible for roughly one‑fifth of global energy shipments. Since the February 28 launch of a joint U.S.–Israel operation against Iran, the strait’s traffic has dwindled to a trickle. Iran continues to navigate its own vessels and has allowed limited passage for foreign ships, while discussing a post‑conflict toll system for the waterway. In response to the blockade threat, Iran’s Islamic Revolutionary Guard Corps warned that any U.S. warship attempting to enforce the measure would breach the existing U.S.–Iran ceasefire—set to expire on April 22—and would be "dealt with severely." Iranian Foreign Minister Abbas Araghchi blamed the United States for the diplomatic failure, accusing U.S. negotiators of "shifting the goalposts" when a deal was "just inches away." Academic commentary echoed regional concerns. Zohreh Kharazmi, an associate professor at the University of Tehran, asserted that the United States "is not in a position to dictate" Iranian maritime movements and warned that a prolonged standoff would quickly reveal which side—"the resilience of the Islamic Republic or the resilience of global markets"—would suffer first. While the blockade targets Iranian ports, CENTCOM emphasized that it will not impede freedom of navigation for vessels merely passing through the Strait of Hormuz, a subtle but significant concession aimed at avoiding a full‑scale maritime confrontation.

The article features three brainteasers with their respective solutions. The first puzzle involves a Navy admiral choosing between sending one ship with a P per cent chance of success or two ships each with a P/2 per cent chance of success. The solution reveals that sending one ship is always the better option.The second puzzle introduces two oracles, Randie and Rando, who answer questions differently. Randie responds randomly, while Rando decides to tell the truth or lie. The solution explains how to distinguish between them by asking a specific question that yields the same answer from both a liar and a truthteller.The third puzzle involves a mathematical problem where Johnny calculates 5548-5489 = 59 by incorrectly canceling out digits. A similar calculation XXYZ - XYZW is analyzed, and the solution reveals that Z and W are 8 and 9, respectively.

Pope Leo XIV arrived in Algeria on Monday, inaugurating the first papal visit to the country and the opening leg of an ambitious 11‑day African tour that includes Cameroon, Angola and Equatorial Guinea. The trip, the longest since his election in May 2025, signals a strategic shift toward the continent.The choice of Africa sends a clear message, according to scholars, that the continent is now a top priority for the Church. Professor Adriaan van Klinken of the University of Leeds notes that Africa now accounts for roughly 20% of the world’s Catholics, making it one of the fastest‑growing Catholic regions, while western Europe’s Catholic numbers are in decline.In the past year, 14 new dioceses have been established across Africa, and the Catholic population has risen by 7 million, according to John Pontifex of Aid to the Church in Need UK. He describes the continent as “coming of age” in Catholicism.Upon landing at Algiers International Airport, Pope Leo was greeted by Algerian President Abdelmadjid Tebboune and later visited the Maqam Echahid, a monument honoring those who died in Algeria’s 1954‑62 war for independence.Father Peter Claver Kogh, rector of the Basilica of Our Lady of Africa, framed the visit as a bridge‑building effort between Christians and Muslims, emphasizing a “climate of peace and tolerance.” He added that the world “needs a fraternal living and harmony” now more than ever.For biographer Austen Ivereigh, the trip continues Pope Francis’s legacy of interfaith dialogue, recalling the 2019 “human fraternity” accord signed with Muslim leaders in the UAE. John Pontifex also highlighted the visit’s timing amid a decline in religious freedom for Christians and liberal Muslims in Algeria.Lucy Esipila of Caritas Africa expects the journey to bolster Catholic communities facing conflict, debt and inequality, describing it as a vivid expression of “synodality” – the Church walking together with peripheral voices.Algeria holds special significance for Pope Leo, the first pontiff from the Augustinian order, as the birthplace of Saint Augustine. Professor Anna Rowlands of Durham University points out that North Africa was a cradle of early Christianity, underscoring the region’s deep theological heritage.The African focus comes as Pope Leo declined an invitation to the United States, opting instead to visit Lampedusa on July 4, a key entry point for migrants crossing the Mediterranean. Historian Dr Miles Pattenden suggests this contrast sends a powerful message to both European leaders and African communities.Father Kogh summed up the atmosphere in Algiers: “It’s a feeling of joy… a message of peace, coexistence and fraternity.”

Tanya Khovanova has long been a leading voice in the world of recreational mathematics, authoring a popular blog and running the Number Gossip site where enthusiasts can inquire about any number.She now debuts her first book, Mathematical Puzzles and Curiosities, co‑written with fellow puzzle‑enthusiasts Ivo David and Yogev Shpilman. Published by World Scientific, the volume offers fresh challenges and inventive twists on classic problems.To give readers a taste, Khovanova selected three puzzles for the Guardian column:1. Battleships – As a naval admiral you must choose between sending a single vessel with a success probability of P % or two vessels each with a P/2 % chance, where the mission succeeds if at least one ship does. Which strategy maximises the odds?2. The Two Oracles – You face two respondents, Randie, who answers randomly, and Rando, who randomly decides to tell the truth or lie before each answer. Is there a method to distinguish them?3. Bad Maths – A student computes 5548 − 5489 as 59, claiming the “548” cancels out. He then experiments with a subtraction of the form XXYZ − XYZW (distinct digits) and observes the result is XW. How many digits in the new expression match those in the original calculation?Solutions to the trio were later posted online (update), but readers were urged to avoid spoilers until the scheduled reveal.Khovanova also reminds fans that she has been curating puzzles for the Guardian every other Monday since 2015 and welcomes new submissions via email.

Hungary's longtime Prime Minister Viktor Orban has conceded defeat in the country's parliamentary election after partial official results showed Peter Magyar's Tisza party winning a landslide victory.With 53.45% of precincts counted, Tisza stood at 52.49% and Orban's Fidesz at 38.83%. In a victory speech, Magyar said his voters had rewritten history, stating, 'Tonight, truth prevailed over lies. Today, we won because Hungarians didn’t ask what their homeland could do for them – they asked what they could do for their homeland.'The partial count showed Tisza ahead in 95 of Hungary's 106 constituencies, with the party projected to win more than 130 mandates in the 199-seat parliament. This comfortable two-thirds majority could allow Tisza to amend Hungary's constitution.Orban's defeat will have significant implications not only for Hungary but also for the European Union, Ukraine, and beyond. It may spell an end to Hungary's adversarial role inside the EU, possibly opening the way for a €90 billion ($105bn) loan to war-battered Ukraine, which was blocked by Orban.Orban's exit could also mean the eventual release of EU funds to Hungary that the bloc had suspended due to what Brussels said was Orban's erosion of democratic standards. Additionally, it would deprive Russian President Vladimir Putin of his main ally in the EU and send shockwaves through Western right-wing circles.

President Donald Trump declared that the U.S. Navy will commence a blockade of the Strait of Hormuz immediately after peace talks between Washington and Tehran in Pakistan ended without an agreement. In a social‑media post, Trump labeled Iran’s actions as “extortion” and warned that American warships would hunt down and interdict any ship that has paid Iran a toll to traverse the waterway, while also beginning mine‑clearing operations. Iran’s Revolutionary Guard responded that civilian vessels may still cross the strait under “specific regulations,” but any military craft attempting entry would be deemed a breach of the cease‑fire and would be “dealt with severely.” Since the February 28 war launched by the United States and Israel, Iran has effectively taken control of the strategic chokepoint, a route that carries about 20% of the world’s oil and liquefied natural gas shipments. Traffic has now dwindled to a trickle, sending shockwaves through the global economy and raising alarm among Gulf Cooperation Council (GCC) states. Al Jazeera correspondents noted that the rhetoric from the White House has amplified “alarm bells” across the GCC, where leaders had hoped the two‑week ceasefire would evolve into a longer‑term peace framework. Oman’s foreign minister, Badr Albusaidi, urged on social media that the ceasefire be extended and that all parties make “painful concessions” to avoid a return to war. Trump’s statements also included a stark threat: any Iranian forces that fire on U.S. or “peaceful” vessels would be “blown to hell.” He claimed the blockade would involve “other countries” and that the United Kingdom, along with “a couple of other nations,” were dispatching minesweeper vessels to assist – a claim the British government has not confirmed. Domestic criticism emerged quickly. Democratic Senator Mark Warner told CNN he “doesn’t see how blockading the strait will compel Iran to open it,” questioning the strategic logic behind the move. Iran denied U.S. allegations that two of its warships had recently passed through the strait for mine‑clearing, warning that any military vessel attempting such a passage would meet a “strong response.” Tehran officials have floated the idea of instituting a post‑conflict toll system for vessels using the waterway, a prospect that could further entrench Iran’s leverage over global energy flows. Analysts warn that heightened tensions in the Hormuz corridor could push oil prices higher, amplifying inflationary pressures worldwide. As the situation unfolds, mediators continue to press both sides to resume diplomatic talks and avoid a broader escalation.

President Donald Trump declared that the United States will commence a naval blockade of the strategic Strait of Hormuz in response to the breakdown of peace talks between Washington and Tehran held in Islamabad.In addition to the blockade, Trump warned that American forces could target Iran’s water‑treatment plants, power stations and bridges unless Tehran abandons its pursuit of a nuclear weapons capability.The announcement came after a 21‑hour round of direct negotiations between the two sides collapsed on Sunday morning, ending a brief cease‑fire that had been brokered by the United States, Israel and Iran.U.S. Vice‑President JD Vance, who led the American delegation, said Iran refused to renounce the possibility of developing nuclear weapons, while Iranian officials accused Washington of failing to earn their trust.Trump instructed the U.S. Navy to begin “blockading any and all ships trying to enter or leave the Strait of Hormuz” starting Monday at 10 a.m. ET (14:00 GMT). He also accused Iran of “extortion” for charging tolls to tankers and announced a de‑mining operation in the waterway’s central sector, although the exact number of mines remains unclear.The Iranian Revolutionary Guard warned that any warships enforcing the blockade would be deemed a breach of the cease‑fire and would be met with a strong response, insisting the strait remains under Iranian control.Two U.S. destroyers transited the strait on Saturday without incident, a move the Pentagon described as the start of a mine‑clearance mission, even as Iranian media claimed the vessels were threatened as they departed.Financial markets reacted sharply: U.S. crude oil jumped 8% to $104.24 per barrel and Brent crude rose 7% to $102.29, reflecting concerns that the blockade could disrupt the flow of roughly 100 tankers that have been paying up to $2 million each for passage.Vance reiterated that the United States seeks a clear, affirmative commitment from Iran not to pursue a nuclear weapon, describing it as the “core goal of the president.”Iranian parliament speaker Mohammad Bagher Ghalibaf argued that Tehran offered “constructive initiatives,” but U.S. demands were “excessive” and hindered an agreement, according to the semi‑official Tasnim news agency.Pakistani mediators urged both parties to avoid renewed hostilities and pledged to arrange fresh talks, emphasizing the importance of upholding the existing cease‑fire.In a televised interview, Trump warned that if a deal cannot be reached, the United States may resume bombing Iran, specifically targeting its water‑supply infrastructure, desalination plants and power generation facilities.Regional fallout continued: at least 11 people were killed in southern Lebanon amid a series of Israeli strikes, while Pope Francis called for an immediate cease‑fire, expressing solidarity with the Lebanese people.The broader conflict, now six weeks old, has claimed more than 3,000 lives in Iran, over 2,000 in Lebanon, dozens in Israel and several Gulf states, and has inflicted extensive damage on critical infrastructure across the Middle East.

Sting, the renowned musician, has returned to his roots in a new production of his musical The Last Ship, this time in Australia. The musical, which premiered in 2014, has been revitalized with new scenes, music, and updated characters. Sting takes on the leading role of foreman Jackie White, who navigates the threat of the shipyard's closure while grappling with his failing health. He is joined on stage by reggae icon Shaggy, who brings warmth to the role of the Wallsend Ferryman.The musical draws on Sting's personal experiences growing up in Wallsend, northern England, where the shipyard dominated the skyline. The story explores themes of mortality, labor, and identity, as well as the tension between tradition and progress. The shipyard becomes a symbol of a communal world built on shared pride and purpose. While the musical resonates with contemporary concerns around the erosion of secure work and the crucial power of collective action, it sometimes leans toward cloying sentimentality.The production features a striking and immersive set, designed by 59 Studio, with towering metal scaffolding and the imposing bow of a vessel. The digital projections blend seamlessly with the physical scenery, creating a unique and captivating visual experience. The cast, including Lauren Samuels and Joe Caffrey, delivers strong performances, with the choral moments being particularly powerful and moving.Despite some criticisms of a slow start and a rushed ending, The Last Ship remains a heartfelt and sincere production. Sting's performance is understated yet authentic, and Shaggy brings his signature charm to the role. The musical runs at the Queensland Performing Arts Centre's Glasshouse Theatre until May 3rd.