Taken at face value Donald Trump’s embrace of reciprocal tariffs is a declaration of total trade war, that would amount to perhaps the single biggest peacetime shock to global commerce.

In promising to levy import taxes on any nation that imposes tariffs or VAT on US exports, he is following through on a campaign promise to address a near trillion dollar trade deficit – the difference between the value of America’s exports and its imports – that he believes amounts to a tax on American jobs.

In response, he wants to deploy tariffs as an “external revenue service”, simultaneously easing the US deficit and, so the theory goes, pricing out imports in favour of domestic production.

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With a promise to reestablish industries, from chip production lost to Taiwan, and car and pharmaceutical manufacturing to Europe, he is promising a country-by-country tailored assault on the status quo.

Risk to Britain remains uncertain

His primary targets appear to be the major trading partners with whom the trading deficit is greatest.

Mexico and Canada, the European Union (whose 10% tariff on US cars is a particular irritation), as well as the ‘BRICS’ nations – Brazil, Russia, India (which imposes 9% tariffs on US imports), China and South Africa.

What it means for the UK will not be certain until the details are revealed in April, but it is a blow to the emerging view in Whitehall that Britain might wriggle through the chaos relatively unscathed.

To begin with, the US runs a trade surplus with the UK – in a quirk of statistics, the UK thinks it has a surplus too – and Brexit has placed it outside the EU bloc with the ability at least in theory to be more agile.

The UK also imposes direct tariffs on very few US goods following a deal in 2021, brokered by then trade secretary Liz Truss, that removed tariffs on denim and motorcycles bound for Britain, and cashmere and Scotch whisky heading the other way.

But we do add VAT to imports, and Mr Trump’s threat to treat the sales tax as a tariff by another name will chill British exporters.

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Tariffs set to raise prices in US

Analysts have estimated tariffs could add 21% to the cost of exports, amounting to a £24bn blow to national income.

Pharmaceuticals, cars, chemicals, scientific instruments and the aerospace industry – the main components of our £182bn US export trade – will all be potentially affected.

But the pain will certainly be shared.

Tariffs are paid by the importer, not the exporter, and even Mr Trump accepts they will be inflationary.

Rising prices on Main Street could yet be the biggest brake on the president’s tariff plan.

Donald Trump has said he would love to have Russia return to the G7 group of advanced economies, and that expelling the country “was a mistake”.

Russia had been a member of the club of industrialised nations, then known as the G8, until it was excluded following its annexation of Ukraine’s Crimea region in 2014.

“I’d love to have them back. I think it was a mistake to throw them out. Look, it’s not a question of liking Russia or not liking Russia,” the US president said at the White House.

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During a series of fast-paced announcements, including a series of US trade tariffs, he also said he wants to discuss reducing defence spending with Russia and China, halve domestic defence expenditure and support moves towards getting rid of nuclear weapons.

The US president had already announced on Wednesday that he and Vladimir Putin would start peace talks “immediately” to end the war in Ukraine.

But much of Thursday’s focus on global defence and spending came after a fractious NATO meeting in Brussels.

It has been an intense 24 hours of diplomacy in Brussels, during which:

• Ukraine’s president said his country must have a place at the negotiating table.

• The Kremlin’s spokesman Dmitri Peskov said Ukraine would be involved in peace talks “one way or another”.

• Donald Trump’s defence secretary Pete Hegseth reiterated the US vow to focus its military might away from Europe – telling NATO allies: “Trump won’t allow anyone to turn Uncle Sam into Uncle Sucker.”

‘Make NATO great again’

Mr Hegseth told NATO allies that the US will not guarantee Europe’s security and pressured leaders to spend more on their militaries.

He told reporters “we must make NATO great again” as he called on allies to do “far more for Europe’s defence”.

In terms of military spending, as a proportion of a country’s GDP, the US defence secretary said: “2% is a start… but it’s not enough. Nor is 3%, nor is 4% – more like 5% – real investment, real urgency.”

Sky News’ US correspondent Mark Stone, who was listening to Mr Hegseth’s comments, said “he represents one man, Donald Trump, and he speaks for him”.

Stone points out that, whether people will like him or loathe him, he “is not a man who has experience in the forum he now finds himself in”.

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‘Ukraine is just the first stage’

In response to the Trump administration’s shift in policy, a European defence minister warned the continent will see its “darkest times since the Second World War” as Russia seeks to rearm and regroup following any peace deal.

Dovile Sakaliene, Lithuania’s defence minister, told reporters: “China and Russia are going to coordinate their actions and if we are not able to work together as a team for the democratic world, it is going to be the darkest times since the Second World War.

“In a few years, we will be in a situation where Russia – with the speed that it’s developing its defence industry and its army – is going to move forward.”

“We all understand that Ukraine is just the first stage currently of an imperial expansion of Russia.”

She added that NATO partners have a stark choice – rebuild their armed forces and defence industries “swiftly and very significantly” or find themselves “in a very difficult situation to put it diplomatically”.

Senior politicians in Moscow crowed over the thawing of relations between Russia and the US after presidents Trump and Putin held a 90-minute phone call on Wednesday.

Dmitry Medvedev, a former president and current security official, mocked Europe’s role on the world stage and said the continent is “mad with jealousy and rage” and that “Europe’s time is over”.

A recording has captured the implosion of the Titan submersible which went missing on its voyage to the wreck of the Titanic.

A passive acoustic recorder located around 900 miles from the implosion site picked up the sound, US Coast Guard officials said in a statement.

The short recording includes a loud noise that sounds like a muffled clap, before going silent for a few seconds.

The coastguard said the audio clip “records the suspected acoustic signature of the Titan submersible implosion” on 18 June 2023.

The implosion killed all five people on board – Titan operator Stockton Rush, who founded Oceangate, the company that owned the submersible; two members of a prominent Pakistani family, Shahzada Dawood and his son Suleman; British adventurer Hamish Harding; and Titanic expert and the sub’s pilot Paul-Henri Nargeolet.

The sub vanished on its way to visit the wreck of the Titanic in the North Atlantic Ocean, setting off a five-day search that ended when authorities said the vessel had been destroyed with no survivors.

The wreckage was eventually found on the ocean floor around 300m from the Titanic, according to officials.

After the disaster concerns were raised because of the Titan’s unconventional design and Rush’s refusal to submit to independent safety checks.

OceanGate suspended operations in July 2023.

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What happened to the Titan?
The stories of those on the Titan submersible

A coastguard panel investigating the disaster heard two weeks of testimony last September, which saw a former OceanGate scientific director say the Titan malfunctioned during a dive just a few days before it imploded.

The coastguard is expected to release more information about the implosion in the future.

A spokesperson said the investigation is still ongoing and a final report will be released after it is completed.