The severity cannot be overstated, if an additional 50% tariffs are levied on all Chinese goods it will decimate trade between the world’s two biggest economies.

Remember, 50% would sit on top of what is already on the table: 34% announced last week, 20% announced at the start of US President Donald Trump’s term, and some additional tariffs left over from his first term in office.

In total, it means all Chinese goods would face tariffs of over 100%, some as high as 120%.

It’s a price that makes any trade almost impossible.

China is really the only nation in the world at the moment that is choosing to take a stand.

While others are publicly making concessions and sending delegations to negotiate, China has clearly calculated that not being seen to be bullied is worth the cost that retaliation will bring.

The real question, though, is if the US does indeed impose this extra 50% tomorrow, what could or would China do next?

It has said it will “fight to the end”, but what does that mean?

In reality, there are few good options.

There are some obvious measures that China will almost certainly enact.

👉 Follow Trump 100 on your podcast app 👈

Further export controls on rare earth minerals (crucial for the development of high-tech products) are one example. China controls a huge proportion of the world’s supply, but the US would likely find workarounds in time.

Hiking tariffs on high-impact US products such as agricultural goods is another option, but there is only so far this could go.

The potentially more impactful options have significant drawbacks for Beijing.

It could, for instance, target high-profile American companies such as Apple and Tesla, but this isn’t ideal at a time when China is trying to attract more foreign investment, and some devaluation of the currency is possible, but it would also come with adverse effects.

Other options are more political and come with the risk of escalation beyond the economic arena.

In an opinion piece this morning, the editor of Xinhua, China’s state news agency, speculated that China could cease all cooperation with the US on the war against fentanyl.

Read more from Sky News:
Baby girl becomes first child in UK to be born from womb transplant
March hottest on record in Europe and by some margin

This has been a major political issue for Mr Trump, and it’s hard to see it would not constitute some sort of red line for him.

Other options touted include banning the import of American films, or perhaps calling for the Chinese public to boycott all American products.

Anything like this comes with a sense that the world’s two most powerful superpowers might be teetering on the edge of not just a total economic decoupling, but cultural separation too.

There is understandably serious nervousness about how that could spiral and the precedent it sets.

A rumour on social media fuelled a brief upturn for struggling US stock markets – but they swiftly swung back down again after the claim was debunked by the White House.

Markets around the world have struggled since some of Donald Trump’s new import tariffs came into effect over the weekend.

Tariffs latest: Starmer sets out response to US levies

The US markets opened on Monday with a fall for the third day in a row but briefly rallied and showed growth of over 2% at 3.15pm UK time.

The upturn came after a social media rumour claimed a top Trump administration adviser had suggested the president could be considering a 90-day pause on tariffs.

The origin of the false report was unclear but it appeared to be a misinterpretation of a comment made by a White House employee during a Fox News interview.

Asked if the US president would consider a pause, Kevin Hassett, White House National Economic Council director, said: “I think the president is going to decide what the president is going to decide.

“There are more than 50 countries in negotiation with the president.”

Nearly two hours later, multiple X accounts posted identical messages claiming Mr Hassett said a pause – for all countries except China – was being considered.

The identical posts were picked up by some news outlets and stock traders, sending the markets skyrocketing.

However, when the White House said any talk of a pause was “fake news”, they were sent back into the red.

Mr Trump has remained defiant despite fears that his levies could be pushing the US towards a recession.

👉 Follow Trump 100 on your podcast app 👈

The US president has insisted the taxes are necessary for rebuilding domestic manufacturing and resetting trade relationships with other countries.

“Be Strong, Courageous, and Patient, and GREATNESS will be the result!” he wrote on Truth Social on Monday.

More from Sky News:
Trump and Netanyahu cancel news conference
Asian stock markets tumble after tariffs

Mr Trump – who played golf in Florida over the weekend – has also threatened an extra tariff on China, after Beijing announced a retaliatory levy on the US.

He said if Beijing does not withdraw its retaliatory tax, the US will impose an additional 50% levy on China and “negotiations with other countries, which have also requested meetings, will begin taking place immediately”.

The Duchess of Sussex has spoken about medical complications she suffered after the birth of one of her children.

Meghan revealed she was diagnosed with postpartum pre-eclampsia, a condition similar to pre-eclampsia which affects women during pregnancy.

In the first episode of a new podcast, Meghan described the condition as “so rare” and “so scary”.

“You’re still trying to juggle all these things and the world doesn’t know what is happening, quietly and in the quiet you are still trying to show up for people,” she added.

“You’re still trying to show up, mostly for your children. But those things are huge medical scares.”

While Meghan spoke about suffering with postpartum pre-eclampsia, she did not reveal whether it happened after the birth of five-year-old son Archie or three-year-old daughter Lilibet.

Postpartum pre-eclampsia is a serious condition linked to high blood pressure which occurs most commonly within the first seven days of a birth, but can be a risk up to six weeks after delivery, according to the charity the Preeclampsia Foundation.

The NHS says symptoms include severe headaches, vision problems, pain below the ribs, vomiting and sudden swelling of the feet, ankles, face and hands.

Without immediate treatment, it can lead to serious complications including, in rare cases, convulsions, liver and blood clotting disorders and strokes.

👉 Listen to Sky News Daily on your podcast app 👈

Meghan’s podcast, Confessions Of A Female Founder, is the latest show she has produced since the release of her Netflix lifestyle series With Love, Meghan and her new brand As Ever.

She has promised the podcast will feature “girl talk” and advice on how to create “billion-dollar businesses”.

Read more from Sky News:
Meghan shares rare picture of Lilibet
Review: With Love, Meghan

Whitney Wolfe Herd, founder of dating platform Bumble, spoke to Meghan on her podcast about the impact of childbirth.

The first episode was released on the same day Prince Harry appeared at the Royal Courts of Justice in London for the latest stage in his legal challenge over the level of security he is given when he is in the UK.