It takes a huge amount of capability, technology and firepower to defeat ballistic missiles – meaning a tit-for-tat air war would favour Israel, backed by the US, over Iran.
The head of the UK armed forces told Sky News over the summer that he does not believe any of the UK’s opponents – including Tehran, Moscow and Beijing – would be able to defeat the scale of attack that Iran first launched towards Israel in April.
“I think the US leadership and the proficiency that we have with our allies is at a level above our potential foes,” Admiral Sir Tony Radakin said in an interview.
That attack in April involved more than 100 ballistic missiles, nearly 200 drones and tens of cruise missiles – which were largely defeated.
Israel and the United States played by far the biggest role in blasting them out of the sky but the UK and a number of other allies also offered support.
Image: A battery of Israel’s Iron Dome defence missile system. Pic: AP
This time around, the Iranian military fired almost twice as many ballistic missiles – the hardest type of weapon to intercept because of the speed they can travel at.
But Israel said most of the projectiles were again intercepted in an operation once more led by Israeli and US forces.
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3:53
‘I’ve never seen anything like it’
While some of the projectiles did penetrate the defences, the damage was seemingly limited.
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It is an outcome that the US in particular will be hoping might limit the size of the Israeli retaliation.
This is what happened in April when the Netanyahu government was urged to “take the win”.
But Israel looks to be in no mood to compromise as its forces exploit the momentum from more than two weeks of punishing attacks against Hezbollah, the Iranian-backed paramilitary force in Lebanon, including the killing of its leader, which part-prompted the Iranian missile strike.
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1:41
Iran’s attack on Israel
Should the Israelis – as anticipated – launch an air attack on Iran, the damage that the Iranian regime would incur would likely be a lot bigger than what Israel absorbed unless the regime too is able to muster up some kind of coalition with its allies, principally Russia.
That seems highly unlikely given Russian forces will want to preserve their air defences to protect their own skies from increasing strikes by Ukraine – although the Russian government has been supplying Iran with increasingly sophisticated air defence systems, reportedly including the S-400, which is a step up from the Russian S-300 that Iran already operates.
Image: Apparent remains of a ballistic missile lying in the desert, after the attack by Iran on Israel. Pic: Reuters
Image: Pic: Reuters
The frailties in Iran’s own ability to defend its skies were exposed in January 2020 when a Revolutionary Guards air defence unit mistakenly shot down a Ukrainian passenger aircraft, killing all 176 people on board.
The error happened during a previous time of regional tensions when Iran was bracing for possible US retaliation to an Iranian attack against US forces in Iraq.
Air defence like a ‘game of 3D chequers’
The task of air defence is high-pressure and hugely complex.
It relies on a layered set of defences that complement each other, and need to be closely coordinated, while involving rapid decision-making and action.
“Early radar and satellite warning is key,” said a former senior Royal Air Force officer.
Image: Israeli Iron Dome air defence system fires to intercept rockets that were launched from Lebanon. Pic: AP
Image: Pic: AP
Images and movement picked up by satellite and radar are then used to identify possible threats, track them and work out if they are friendly, hostile or still unknown.
Next, commanders must prioritise the hostile threats, before instructing the appropriate air defence team to open fire.
Different threats require varying types of air defence systems, from short-range ground-based weapons to longer-range ones, with aircraft also able to play a role.
“So, a game of 3D chequers – putting in appropriate blocking pieces,” the former RAF officer said.
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0:51
How is Iran involved with Hezbollah?
Ballistic missiles are typically countered by large ground or sea-based air defence platforms that can even destroy the missile while it is out of the Earth’s atmosphere – which is almost certainly what will have happened to chunks of the incoming Iranian arsenal.
I watched some of the intercepts high up in the sky above northern Israel – they could well have been exoatmospheric (outside the Earth’s atmosphere).
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0:59
Missiles rain down on Jerusalem
Adding to the complexity of the challenge of shooting down incoming projectiles is Iran’s geography.
Geographically, it is a much bigger country than Israel, meaning finite air defence systems will only be able to guard the most important people and sites – in particular nuclear facilities.
On the flip side, the distance between Iran and Israel creates difficulties for the attacking force.
Israel has a far more sophisticated air force than the Iranians so may well seek to strike Iran with cruise missiles and other bombs launched from jets rather than ballistic missiles.
But they will need to fly more than 1,000 miles to hit their targets, laden with bombs and refuelling multiple times in the air – a mission that will be impossible to hide in advance.
Yet this is a mission Israel will have trained for.
It might well be just a matter of time until its aircraft fly the sortie for real.
Global financial markets gave a clear vote of no-confidence in President Trump’s economic policy.
The damage it will do is obvious: costs for companies will rise, hitting their earnings.
The consequences will ripple throughout the global economy, with economists now raising their expectations for a recession, not only in the US, but across the world.
The court ruled to uphold the impeachment saying the conservative leader “violated his duty as commander-in-chief by mobilising troops” when he declared martial law.
The president was also said to have taken actions “beyond the powers provided in the constitution”.
Image: Demonstrators stayed overnight near the constitutional court. Pic: AP
Supporters and opponents of the president gathered in their thousands in central Seoul as they awaited the ruling.
The 64-year-old shocked MPs, the public and international allies in early December when he declared martial law, meaning all existing laws regarding civilians were suspended in place of military law.
Image: The court was under heavy police security guard ahead of the announcement. Pic: AP
After suddenly declaring martial law, Mr Yoon sent hundreds of soldiers and police officers to the National Assembly.
He has argued that he sought to maintain order, but some senior military and police officers sent there have told hearings and investigators that Mr Yoon ordered them to drag out politicians to prevent an assembly vote on his decree.
His presidential powers were suspended when the opposition-dominated assembly voted to impeach him on 14 December, accusing him of rebellion.
The unanimous verdict to uphold parliament’s impeachment and remove Mr Yoon from office required the support of at least six of the court’s eight justices.
South Korea must hold a national election within two months to find a new leader.
Lee Jae-myung, leader of the main liberal opposition Democratic Party, is the early favourite to become the country’s next president, according to surveys.
While the UK’s FTSE 100 closed down 1.55% and the continent’s STOXX Europe 600 index was down 2.67% as of 5.30pm, it was American traders who were hit the most.
All three of the US’s major markets opened to sharp losses on Thursday morning.
Image: The S&P 500 is set for its worst day of trading since the COVID-19 pandemic. File pic: AP
By 8.30pm UK time (3.30pm EST), The Dow Jones Industrial Average was down 3.7%, the S&P 500 opened with a drop of 4.4%, and the Nasdaq composite was down 5.6%.
Compared to their values when Donald Trump was inaugurated, the three markets were down around 5.6%, 8.7% and 14.4%, respectively, according to LSEG.
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Worst one-day losses since COVID
As Wall Street trading ended at 9pm in the UK, two indexes had suffered their worst one-day losses since the COVID-19 pandemic.
The S&P 500 fell 4.85%, the Nasdaq dropped 6%, and the Dow Jones fell 4%.
It marks Nasdaq’s biggest daily percentage drop since March 2020 at the start of COVID, and the largest drop for the Dow Jones since June 2020.
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5:07
The latest numbers on tariffs
‘Trust in President Trump’
White House press secretary Karoline Leavitt told CNN earlier in the day that Mr Trump was “doubling down on his proven economic formula from his first term”.
“To anyone on Wall Street this morning, I would say trust in President Trump,” she told the broadcaster, adding: “This is indeed a national emergency… and it’s about time we have a president who actually does something about it.”
Later, the US president told reporters as he left the White House that “I think it’s going very well,” adding: “The markets are going to boom, the stock is going to boom, the country is going to boom.”
He later said on Air Force One that the UK is “happy” with its tariff – the lowest possible levy of 10% – and added he would be open to negotiations if other countries “offer something phenomenal”.
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3:27
How is the world reacting to Trump’s tariffs?
Economist warns of ‘spiral of doom’
The turbulence in the markets from Mr Trump’s tariffs “just left everybody in shock”, Garrett Melson, portfolio strategist at Natixis Investment Managers Solutions in Boston, told Reuters.
He added that the economy could go into recession as a result, saying that “a lot of the pain, will probably most acutely be felt in the US and that certainly would weigh on broader global growth as well”.
Meanwhile, chief investment officer at St James’s Place Justin Onuekwusi said that international retaliation is likely, even as “it’s clear countries will think about how to retaliate in a politically astute way”.
He warned: “Significant retaliation could lead to a tariff ‘spiral of doom’ that could be the growth shock that drags us into recession.”
It comes as the UK government published a long list of US products that could be subject to reciprocal tariffs – including golf clubs and golf balls.
Running to more than 400 pages, the list is part of a four-week-long consultation with British businesses and suggests whiskey, jeans, livestock, and chemical components.
Meanwhile, Prime Minister Sir Keir Starmer said on Thursday that the US president had launched a “new era” for global trade and that the UK will respond with “cool and calm heads”.
It also comes as Canadian Prime Minister Mark Carney announced a 25% tariff on all American-imported vehicles that are not compliant with the US-Mexico-Canada trade deal.
He added: “The 80-year period when the United States embraced the mantle of global economic leadership, when it forged alliances rooted in trust and mutual respect and championed the free and open exchange of goods and services, is over. This is a tragedy.”