The US president has given the Iranians a choice: negotiate or face devastating escalation.
The next move is down to Iran’s supreme leader, Ayatollah Ali Khamenei.
He has spent his entire life trying to roll back American power and influence in the region.
Expecting him to negotiate with the US now, with B-2 bombers held to his head, is a tall order.
More likely, he will order some kind of retaliation – at least for now.
He will want to deter Donald Trump from launching more attacks and may calculate that killing Americans is the best way of doing so.
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Hegseth: ‘World should listen to Trump’
The ayatollah knows that could drive a wedge between Trump and his MAGA supporters, who say America is getting drawn into yet another Middle Eastern war, risking US lives.
There are plenty of US targets for Iran to aim at, with bases throughout the Middle East: in Qatar, Kuwait, Iraq, and Saudi Arabia.
The Iranians could attack them directly with drones and missiles, or use proxies in the region, Iran-backed militias in Iraq, or the Houthis, based in Yemen.
Iran could threaten shipping and the oil industry in the Persian Gulf. If the Gulf becomes a war zone, expect a big hit to the global economy and the price of oil to rocket.
But all that would invite massive retaliation from the US. The Trump administration has spelt that out in no uncertain terms.
America has sent an awesome amount of firepower to the region: three aircraft carrier groups bristling with fighter jets and submarines loaded with cruise missiles.
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PM: ‘My focus is on de-escalation’
So the Iranians may instead go for the kind of asymmetric warfare they excel at. The UK could be in the firing line too. We could see Iranian terrorist attacks here in Britain.
One way or another, this is almost certain to escalate, but could it widen and draw other countries into the conflict?
Russia and Iran have a strategic partnership agreement, but it doesn’t require Russia to come to Tehran’s support.
Iran is also China’s closest ally in the Middle East, but Beijing is also likely to sit this one out and watch from the sidelines.
Wars have unintended consequences, but there are strong reasons for other powers to avoid becoming involved in this one.
Looking further ahead, there are two competing priorities to watch. For Iran’s leadership, it is all about survival, to absorb the blows and live to fight another day, and eventually build the bomb if it can, to stop this ever happening to them again.
And Israel is equally determined that will not happen.
One method would be regime change in Iran, but its leadership is proving resilient so far, despite the mounting challenges it faces.
Instead, Israel faces a long period of managing the threat posed by Iran.
It will need to monitor the Iranians, watching for signs they are developing their missile programme, meddling in the region or reviving their nuclear project, and cut them down to size when necessary.
That could mean years more of military action and could be hugely costly for Israel and its backers, the US taxpayers.
In summary, Iran’s leadership is in a very tight spot and is likely to lash out, but the future will not be a walk in the park for Israel, either, while there are big risks for America, too.
But that $1trn figure (or £761,910,000,000) – which is both one thousand billion and one million million – is almost impossible to imagine for most people.
Even so, we have drilled down into the numbers and examined what you can do with a trillion US dollars – and it turns out, quite a lot.
Show me the money
Laid end to end, a trillion one-dollar bills would cover a distance of approximately 156 billion metres.
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That could wrap around the equator 3,890 times, easily reach the sun from Earth (around 149.6 million km) or loop from Earth to the moon 405 times.
That many one-dollar notes could cover a massive area (roughly 10,339 km squared), meaning you could blanket nearly all of Lebanon or Jamaica in bills.
Spend it on sport
You could splash out on virtually all of the world’s major sporting leagues.
The clubs which make up the Premier League are relatively cheap ($30bn), and even when snapping up the UEFA Champions League clubs and the big five top divisions of Spain, Italy, Germany, and France, there’s still $858bn left in the kitty.
The four major US sports leagues for ice hockey, baseball, basketball, and American football (NFL, NBA, MLB and NHL) have a rough valuation of $544bn, according to Sportico.
But then add the IPL cricket league ($120bn) and F1 ($23.1bn) and Musk still has change from an estimated total spend of $829.7bn.
Image: Elon Musk is in the money if he hits targets set by Tesla’s shareholders. File pic: AP
Take over Tesla’s rivals
He could buy up the top 15 largest publicly traded automakers (excluding Tesla) by market capitalisation.
They would include firms like Japan’s Toyota ($275bn), Chinese automaker BYD ($120bn), and luxury brands like Ferrari ($81bn) and Mercedes-Benz ($62bn), as well as BMW ($52bn), Volkswagen ($50bn) and Ford ($48bn).
But there would still be a little change left over; the total bill would be an eye-watering $992bn.
Buy up San Diego
He could buy up every single residential property in San Diego County – valued at a total of $1trn. Seattle is just slightly out of reach at $1.1trn, according to recent data from real estate firm Zillow.
But if he wanted to buy big – there is always Tennessee. The total value of homes in the US state is estimated at $957bn. Or there is Maryland, which at $1.01trn could be bought if he can find a little more cash behind the sofa.
Sadly, he would struggle to scoop up London’s entire housing stock, which in February was valued at just under £2trn ($2.53trn), according to agents Savills.
Cities like New York ($4.6trn) and Los Angeles ($3.9trn) are also not within his budget, hosting America’s most expensive residential markets.
Do something charitable?
There is always the possibility Musk could follow in the footsteps of Microsoft founder Bill Gates, who intends to give away 99% of his vast fortune over the next 20 years.
He could give every single man, woman, and child in the US a share of his cash pile. They would receive approximately $2,917.32 (£2,223.29), based on a population estimate of 342.7 million.
Although it would be roughly $14,348.79 (£10,935.20) for every person (roughly 69.6 million) in the UK.
If he wanted to give the entire globe an early Christmas present, then based on the rough world population estimate of 8.2 billion, everyone would receive $121.80 (£92.87).
Pay off the credit card
With $1trn, he could instantly rewrite history and erase debt interest payments and the government debt from dozens of the world’s sovereign nations.
Or Musk could wipe out the debts of Singapore ($1trn) or South Korea ($0.99trn) in one go, according to figures from the International Monetary Fund’s latest World Economic Outlook (Oct 2025).
But when it comes to the biggest debt-laden countries, $1trn would not even touch the sides.
The US has $38.3trn of government debt (just over one third of the total global debt pile) while the UK has a modest $4.1trn.
Prince Harry has apologised to Canada for wearing a Los Angeles Dodgers cap while attending a World Series game against the Toronto Blue Jays.
The Duke of Sussex and his wife, Meghan, were pictured at the baseball game last Tuesday, which Toronto ultimately lost to the Dodgers in a seventh-game decider on Sunday.
The prince joked to Canadian broadcaster CTV that he wore the Dodgers merchandise “under duress”.
He said it felt like “the polite thing to do” after being invited to the dugout by the team’s owner.
“Firstly, I would like to apologise to Canada for wearing it,” he said.
“Secondly, I was under duress. There wasn’t much choice.”
“When you’re missing a lot of hair on top, and you’re sitting under floodlights, you’ll take any hat that’s available,” he joked.
“Game five, game six, game seven, I was Blue Jays throughout. Now that I’ve admitted that, it’s going to be pretty hard for me to return back to Los Angeles.”
The royal couple, who met in 2016 and married in 2018, moved to California in 2020 – after initially setting up home in Canada. They live in Montecito with their children Archie, six, and Lilibet, four.
Harry’s father, the King, is the head of state of Canada – a Commonwealth nation.
Meghan has previously shown her support for the Blue Jays, a nod to her former home city.
The former actress lived in Toronto while filming the legal drama Suits. She appeared in more than 100 episodes.
She and Harry also spent time together there during the early stages of their relationship.
James Watson, co-discoverer of the double-helix shape of DNA, has died at the age of 97.
James D. Watson shared a 1962 Nobel Prize with Francis Crick and Maurice Wilkins for discovering that deoxyribonucleic acid, or DNA.
Their co-discovery of the twisted-ladder structure of DNA in 1953 helped revolutionise medicine, crime-fighting, genealogy and ethics.
The discovery turned him into a legendary figure, but later in life he faced condemnation for offensive remarks, including saying black people are less intelligent than white people.
This breaking news story is being updated and more details will be published shortly.