Good morning. Last night, the race for the US presidency formally started – and Donald Trump has won the first round by a landslide. With 99% of votes counted, Trump has 51% of Republican support in the Iowa caucus – a victory of unprecedented dominance for any race not involving a sitting president. Ron DeSantis got 21% of votes, a very distant second place that he tried to present as a success – while Nikki Haley finished a disappointing third with 19% but claimed she now had the momentum to challenge Trump. In truth, though, the result is so decisive that it’s all but impossible to see anyone but Trump taking the nomination from here. Today’s newsletter, with the Guardian’s David Smith at the Trump victory party in Des Moines, explains what the results in Iowa mean for each of the three leading Republican campaigns. Here are the headlines. Five big stories Conservatives | Rishi Sunak is facing a Conservative meltdown over the Rwanda deportation bill after two deputy chairs said they would support rebel amendments aimed at blocking international human rights laws. Lee Anderson and Brendan Clarke-Smith have defied the prime minister by backing rightwing challenges to the bill, which will be debated by parliament on Tuesday. Middle East crisis | The Houthi militia group has continued to attack commercial shipping, hitting an American-owned container ship with a ballistic missile in defiance of US and UK strikes on Yemen. While the strike caused no major damage, it will add to fears that the militia group retains the ability to threaten commercial shipping. Rail strikes | Train drivers have called a further week of rolling strikes across England from late January in their long-running dispute with operators over pay. Members of the Aslef union will strike for 24 hours at each train-operating company on the national railway on different days between Tuesday 30 January and Monday 5 February. Security | Hizb ut-Tahrir will be banned from organising in the UK following claims that the group is antisemitic, the home secretary has said. The Islamist group is already banned in several countries including Germany and Indonesia. Emmys | Beef, The Bear and the final season of Succession reigned supreme at the delayed 2023 Emmy awards. Jesse Armstrong’s hit HBO drama picked up six awards, including for actors Kieran Culkin, Sarah Snook and Matthew Macfadyen and the night’s biggest award for best drama series. See the red carpet fashion and a full list of winners. In depth: In freezing weather, Trump wins by an avalanche With Joe Biden secure as the Democratic nominee, this year’s primary calendar is only about one thing: who will be his Republican challenger. The answer to that question already looks pretty obvious, and the Iowa caucus did nothing to dispel it. But after months of the phoney campaign, the first real results do have important things to tell us about the state of the race – and whether those in the Republican party who don’t want Trump can unite behind an alternative. One minor piece of housekeeping before the main event: Trump tribute act Vivek Ramaswamy finished fourth with 8% of the vote and dropped out. “Nobody knew who we were, nobody knew what we were up to,” he said. A fitting political obituary. A ‘perfect night’ for Donald Trump In the run-up to Iowa, Trump’s campaign argued that any victory by 13 points or more would be a historic success: the biggest previous victory was Bob Dole’s 12.8-point margin in 1988. That was a very low bar to set given polls placed him 30 points ahead of the pack, and he cleared it by a distance last night. “I don’t think there was much question beforehand, but it looks even more certain now,” said David Smith. “He won 98 out of 99 counties, and he only lost to Haley by one vote in the other. He won the middle class suburbs where he might traditionally struggle against someone more moderate. It was a perfect night for Trump – it’s all over bar the shouting.” David was at Trump’s election watch party in a cavernous conference centre. “He won so quickly that hardly anyone was there when it was announced,” he said. “So you didn’t get the customary big cheer.” When his supporters did get in, they celebrated with popcorn and beer alongside Maga hardliners like Matt Gaetz and Marjorie Taylor Greene – as well as Nigel Farage. Iowa’s Republican voters are among the most socially conservative in the US, but Trump’s margin is so vast that there’s no obvious route for either of his main opponents to make up the difference elsewhere. “You can make the case that this is a home fixture for him in some ways, and it will be a bit tougher next week in New Hampshire – but it swings back towards him very quickly after that,” David said. His win came despite his refusal to participate in debates with Republican rivals and a less intense campaign in Iowa than Ron DeSantis or Nikki Haley ran. Although he has a more professional ground operation than he did in 2016, Trump has spent much less time in the state this time around. (He made just 18 visits in 2023, against dozens for his main rivals.) “He broke the rules of retail politics in Iowa,” David said. “But strategically it was very successful. Staying away from the debates helped enforce the impression of inevitability.” Starting this week, the Trump on Trial newsletter will bring daily analysis and weekly previews of the developments in the legal cases against the Republican presidential candidate. Sign up here. DeSantis beats the polls – but still gets trounced On Sunday, DeSantis (above) asked his supporters: “Are you ready to make some history on Monday night?” Finishing a distant second to Trump is hardly an epochal event – but it just about does enough to keep his campaign alive, and DeSantis will now claim to have momentum heading into the New Hampshire primary next week. He told supporters: “They threw everything but the kitchen sink at us … [but] we’ve got our ticket punched out of Iowa.” In recent polls, the Florida governor has been behind Nikki Haley by several percentage points. But the always-unpredictable Iowa caucus process, in which voters listen to pitches from the candidates’ representatives before casting their ballots, was further complicated by freezing temperatures that depressed turnout – expected to finish at about 110,000 voters, against 187,000 in 2016 and the lowest in almost a quarter of a century. That appears to have benefited DeSantis, who has a well-funded get-out-the-vote operation in Iowa. “He lives to fight another day,” said David. “He worked very hard in the state, and he may have been helped by the extraordinarily cold weather. Polls for the Iowa caucus are often wrong – a lot of people I spoke to tonight before the first results came in expected him to finish second.” Even so, the DeSantis campaign remains in dire straits. “In the end it is pretty soul-crushing for him,” David said. “He went to all 99 counties, and lost within half an hour.” In 2022, he appeared to hold a promising position as “Trump without the baggage” – a candidate who could carry the former president’s ultra-conservative agenda on immigration, gun rights and culture war issues without the same accompanying chaos in the White House. But refusing to criticise Trump for months in the hope that his adversary would ultimately implode on his own has made him appear weak to voters who value strength above all – and basically pointless: “The people who want Trump don’t need a mini-me Trump,” former Republican congresswoman Barbara Comstock pointed out in August. Finishing ahead of Haley does little to dispel that fundamental dynamic. Haley falls short and leaves the field divided The former governor of South Carolina (above) has sought to present herself as the most electable Republican candidate in a general election, pointing to a recent Wall Street Journal poll that showed her 17 points ahead of Biden when voters are asked to choose between the two. In November, an endorsement and $4m from Americans for Prosperity, an immensely powerful libertarian political campaign group founded by the billionaire Koch brothers, gave crucial credibility to her attempt to cement herself as the alternative to Trump. But last night’s results are a devastating blow to that argument. She told supporters: “I can safely say tonight Iowa made this Republican primary a two-person race.” As David noted: “That’s a pretty unusual claim for the person who finished third.” Haley is likely to continue to New Hampshire, where she is second to Trump in recent polls by the relatively narrow margin of 11 points. The good news for Trump is that the narrow difference between her and DeSantis, together with her slightly better position in New Hampshire, means that neither is likely to drop out. “That’s the icing on the cake for Trump,” David said. “It blunts her momentum ahead of New Hampshire.” Although she entered politics as part of the proto-Maga Tea Party movement, Haley rejects Trump’s false claims that the 2020 election was stolen from him, and rivals have sought to portray her as too liberal to win the Republican nomination. While she largely echoes Trump on immigration, she has rejected policies like the separation of families at the border. She has focused on her foreign policy experience as Trump’s ambassador to the UN, and promised to find a compromise on abortion. In the end, though, a candidate whose main appeal was electability appears likely to be fatally harmed by doing so badly in an actual vote. “If she had pulled off second, the landscape would look pretty different,” David said. “There would be a conversation about her as the challenger, and whether DeSantis is going to pull out. But instead, this looks like an illustration of fractured opposition. Neither Haley or DeSantis has ever really escaped the shadow of Trump to build their own political identities.” What else we’ve been reading David Smith spoke with Raymond Arsenault, the author of the first full-length biography of the late congressman and civil rights giant John Lewis (above, left). They discuss Lewis’s life, his guiding values of compassion, reconciliation and forgiveness that informed his politics and his storied career in Congress. Nimo After the Daily Telegraph published an opinion poll yesterday that suggested the Conservatives are heading for a 1997-style landslide defeat, Paul Goodman, the editor of ConservativeHome, has a perceptive piece on who’s behind it – and why it’s come out now. Archie By 2030, the global population will be older than it ever has been: one in six people will be over the age of 60. This touching and thoughtful photo essay by Ed Kashi, Ilvy Njiokiktjien, and Sara Terry documents the daily lives of 72-year-olds from around the world. Nimo Julian Baggini reflects on the rare consensus that has emerged around the Post Office scandal – and warns that very few injustices are likely to be so easily understood. “There has been something cathartic about this collective show of anger,” he writes. “But it is not always as easy as this to side with the angels.” Archie Dominic Sessa’s original plan in high school was to become a professional hockey player but a broken femur forced him to change course. His new plan was to act. Sessa spoke to Adrian Horton about the chance audition that led him to the opportunity of a lifetime. Nimo Sport Tennis | Andy Murray (above) admitted that there is a “definite possibility” that he has played his last Australian Open after the five-time finalist suffered his most sobering grand-slam defeat since returning from hip surgery. Murray lost 6-4, 6-2, 6-2 to Tomás Martín Etcheverry, the 30th seed, in the first round of the Australian Open. Follow live coverage of day three here. Football | Aitana Bonmatí said she was “proud” to be part of a generation of women “changing the game and the world” as the Spain World Cup star claimed the title of the Best Fifa women’s player for 2023 at a star-studded award ceremony in London. Lionel Messi won the men’s award for a third time, narrowly pipping Erling Haaland to the prize. Football | Nottingham Forest are facing a potential points deduction after being charged with breaching the Premier League’s profit and sustainability rules (PSR), and Everton could lose more points after being charged with a further breach of the same rules. Will Unwin’s analysis explains the spending spree that put Forest in the dock. The front pages “Defiant Houthis attack cargo ship as conflict widens in Middle East” is the headline on our Guardian print lead this morning. “Name calling” – the Daily Mirror leads with the royals and the Queen’s apparent posthumous vent about Lilibet-gate. The i has “Migrants taken off first Rwanda flight still in asylum hotels 18 months later” while the Daily Telegraph reports “Tory deputy chairmen to rebel over Rwanda Bill”. The Daily Express and the Daily Mail seek to rally Rishi Sunak – respectively, their headlines are “PM: I’ll defy Euro judges who block Rwanda flights” and “PM: I will defy Euro judges on Rwanda flights”. The Times reports “Sunak will speed Rwanda appeals in sop to rebels”. The Metro says “Child sex scandal report … 96 Rochdale groomers still free”. Top story in the Financial Times is “Better governance and IT would save £20bn a year, says spending watchdog”. Today in Focus Will South Africa’s genocide case against Israel succeed? South Africa has accused Israel of committing genocide in Gaza at hearings in the international court of justice. Chris McGreal reports on what happens next Cartoon of the day | Ben Jennings The Upside A bit of good news to remind you that the world’s not all bad During the pandemic, Henry Jephson, head of research at the Bristol Fungarium, came across a lion’s mane, a rare type of mushroom which is under threat in the UK. Jephson’s sighting of the enormous shaggy specimen was the first in eight years in south-west England, so he was shocked to see that the landowner had felled its host tree, smashing the mushroom in the process. The experience accelerated a shift in the focus of his work to conservation of native fungi alongside Natural England and the Royal Horticultural Society. Jephson now helps run a mushroom farm, which has pivoted from growing commercial mushrooms to conserving natural, wild mushrooms and creating health supplements from them. Sign up here for a weekly roundup of The Upside, sent to you every Sunday Bored at work? And finally, the Guardian’s puzzles are here to keep you entertained throughout the day – with plenty more on the Guardian’s Puzzles app for iOS and Android. Until tomorrow. Quick crossword Cryptic crossword Wordiply