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One thousand feet above the world’s largest iceberg, it’s hard to believe what you’re seeing.

It stretches all the way to the horizon – a field of white as far as the eye can see.

Its edge looks thin in comparison, until you make out a bird flying alongside and realise it is, in fact, a cliff of ice hundreds of feet high.

Scientists who have used satellites to track the iceberg’s decades-long meanderings north from Antarctica have codenamed the iceberg A23a.

But up close, numbers and letters don’t do it justice.

SN stills of world's biggest iceberg codenamed A23a visited by Tom Clarke, around 50 miles off the small island of South Georgia. No credit needed
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The massive iceberg has run aground around 50 miles off the small island of South Georgia

SN stills of world's biggest iceberg codenamed A23a visited by Tom Clarke, around 50 miles off the small island of South Georgia. No credit needed
SN stills of world's biggest iceberg codenamed A23a visited by Tom Clarke, around 50 miles off the small island of South Georgia. No credit needed

It’s a seemingly endless slab of white, fringed by an aquamarine glow – the ocean at its base backlit by a sill of reflective ice below.

Monotonous yet magnificent; we’re flying along the coastline of a nation of ice.

And it’s also hard to believe you’re seeing it at all.

Where it has run aground – 50 miles off the small island of South Georgia – seems impossibly remote.

We’re 800 miles from the Falkland Islands and 900 miles from the icy wastes of Antarctica.

With no runway on South Georgia, there’s only one aircraft that ever flies here.

SN stills of small island of South Georgia, visited by Tom Clarke, as he flew by the world's biggest iceberg codenamed A23a. No credit needed
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The iceberg is around 50 miles from these dramatic peaks in South Georgia

SN stills of small island of South Georgia, visited by Tom Clarke, as he flew by the world's biggest iceberg codenamed A23a. No credit needed
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Large chunks of ice have broken off

SN stills of small island of South Georgia, visited by Tom Clarke, as he flew by the world's biggest iceberg codenamed A23a. No credit needed
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The view over South Georgia

Once a month or so, a Royal Air Force A400 transport plane based in the Falklands carries out Operation Cold Stare – a maritime surveillance and enforcement flight over the British Overseas Territory that includes the neighbouring South Sandwich Islands.

It’s a smooth, albeit noisy, two-hour flight to South Georgia.

But as the dramatic peaks of the island come into view, the ride – for us inexperienced passengers at least – gets scary.

Gusts off the mountains and steep terrain throw the plane and its occupants around.

Not that that stops the pilots completing their circuit of the island.

We fly over some of its 500,000 square mile marine protected zone designed to protect the greatest concentration of marine mammals and birds on the planet that is found on South Georgia.

SN stills of world's biggest iceberg codenamed A23a visited by Tom Clarke, around 50 miles off the small island of South Georgia. No credit needed
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Cracks are appearing along the edges of A23a

Only then do we head out to the iceberg, and even though it’s only a few minutes flying from South Georgia it’s at first hard to see. It’s so big and white it’s indistinguishable from the horizon through the haze.

Until suddenly, its edge comes into view.

SN stills of world's biggest iceberg codenamed A23a visited by Tom Clarke, around 50 miles off the small island of South Georgia. No credit needed
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The warmer ocean is undercutting the ice, weakening it further

SN stills of world's biggest iceberg codenamed A23a visited by Tom Clarke, around 50 miles off the small island of South Georgia. No credit needed
Image:
Arches have formed at its base and are being eroded away

It’s immediately apparent the A23a is not too long for this world. Large icebergs hundreds of metres across have already broken off and are drifting closer to South Georgia.

All along its edges, cracks are appearing and arches at its base caverns are being eroded by the warmer ocean here, undercutting the ice, weakening it further.

The iceberg might present a problem for some of South Georgia’s super-abundant penguins, seals and seabirds. A jumble of rapidly fragmenting ice could choke up certain bays and beaches in which colonies of the animals breed.

The trillion tonnes of fresh water melting out of the iceberg could also interfere with the food webs that sustain marine life.

However, the breeding season is coming to an end and icebergs are also known to fertilise oceans with sediment carried from the Antarctic continent.

The impact on shipping is more relevant. There’s not much of it down here. But fishing vessels, cruise ships and research teams ply these waters and smaller lumps of ice called “growlers” are a regular risk.

A23a will create many.

Icebergs this big are too few for scientists to know if they are becoming more frequent or not.

But they are symptomatic of a clearly emerging trend. As our climate warms, Antarctica is slowly melting.

It’s losing around 150 billion tonnes of ice a year – half of it breaking off the continent in the form of icebergs calving from glaciers, the rest melting directly from its vast ice sheets as temperatures gradually rise.

The pace of A23a’s disintegration is far, far faster. It will disappear in months, not millennia.

But watching its edges crumble and slide into the South Atlantic, you can’t help seeing it as the fate of a whole continent in miniature.

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Ukraine and Europe cannot reject Trump’s plan – they will play for time and hope he can still be persuaded to desert the Kremlin

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Ukraine and Europe cannot reject Trump's plan - they will play for time and hope he can still be persuaded to desert the Kremlin

“Terrible”, “weird”, “peculiar” and “baffling” – some of the adjectives being levelled by observers at the Donald Trump administration’s peace plan for Ukraine.

The 28-point proposal was cooked up between Trump negotiator Steve Witkoff and Kremlin official Kirill Dmitriev without European and Ukrainian involvement.

It effectively dresses up Russian demands as a peace proposal. Demands first made by Russia at the high watermark of its invasion in 2022, before defeats forced it to retreat from much of Ukraine.

Ukraine war latest: Kyiv receives US peace plan

(l-r) Kirill Dmitriev and special envoy Steve Witkoff in St Petersburg in April 2025. Pic: Kremlin Pool Photo/AP
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(l-r) Kirill Dmitriev and special envoy Steve Witkoff in St Petersburg in April 2025. Pic: Kremlin Pool Photo/AP

Its proposals are non-starters for Ukrainians.

It would hand over the rest of Donbas, territory they have spent almost four years and lost tens of thousands of men defending.

Analysts estimate at the current rate of advance, it would take Russia four more years to take the land it is proposing simply to give them instead.

It proposes more than halving the size of the Ukrainian military and depriving them of some of their most effective long-range weapons.

And it would bar any foreign forces acting as peacekeepers in Ukraine after any peace deal is done.

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Is Moscow back in Washington’s good books?

The plan comes at an excruciating time for the Ukrainians.

They are being pounded with devastating drone attacks, killing dozens in the last few nights alone.

They are on the verge of losing a key stronghold city, Pokrovsk.

And Volodymyr Zelenskyy is embroiled in the gravest political crisis since the war began, with key officials facing damaging corruption allegations.

Read more from Sky News:
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Ukrainian support for peace plan ‘very much in doubt’

The suspicion is Mr Witkoff and Mr Dmitriev conspired together to choose this moment to put even more pressure on the Ukrainian president.

Perversely, though, it may help him.

There has been universal condemnation and outrage in Kyiv at the Witkoff-Dmitriev plan. Rivals have little choice but to rally around the wartime Ukrainian leader as he faces such unreasonable demands.

The genesis of this plan is unclear.

Was it born from Donald Trump’s overinflated belief in his peacemaking abilities? His overrated Gaza ceasefire plan attracted lavish praise from world leaders, but now seems mired in deepening difficulty.

The fear is Mr Trump’s team are finding ways to allow him to walk away from this conflict altogether, blaming Ukrainian intransigence for the failure of his diplomacy.

Mr Trump has already ended financial support for Ukraine, acting as an arms dealer instead, selling weapons to Europe to pass on to the invaded democracy.

If he were to take away military intelligence support too, Ukraine would be blind to the kind of attacks that in recent days have killed scores of civilians.

Europe and Ukraine cannot reject the plan entirely and risk alienating Mr Trump.

They will play for time and hope against all the evidence he can still be persuaded to desert the Kremlin and put pressure on Vladimir Putin to end the war, rather than force Ukraine to surrender instead.

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South Africa is making history with its first G20 summit, but the continued exclusion of its oldest communities is a symbolic threat

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South Africa is making history with its first G20 summit, but the continued exclusion of its oldest communities is a symbolic threat

This is the first time the G20 summit is being hosted on African soil.

Heads of state from 15 countries across Europe, Asia and South America are expected to convene in South Africa’s economic capital, Johannesburg, under the banner of “solidarity, equality and sustainability.”

The summit is facing challenges from the Oval Office as US President Donald Trump boycotts the event, where the G20 leadership is meant to be handed over to him by South African President Cyril Ramaphosa.

The US has also warned South Africa against issuing a joint declaration at the end of the summit. The challenges to South Africa’s G20 debut are also domestic.

Trump had a contentious meeting with Cyril Ramaphosa in the Oval Office earlier this year. File pic: AP
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Trump had a contentious meeting with Cyril Ramaphosa in the Oval Office earlier this year. File pic: AP

Nationwide civic disobedience has been planned by women’s rights charities, nationalist groups and trade unions – all using this moment to draw the government’s attention to critical issues it has failed to address around femicide, immigration and high unemployment.

But a key symbolic threat to the credibility of an African G20 summit themed around inclusivity is the continued exclusion and marginalisation of its oldest communities.

“There is a disingenuous thread that runs right through many of these gatherings, and the G20 is no different”, Khoisan Chief Zenzile tells us in front of the First Nations Heritage Centre in Cape Town, “from any of them”.

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“I am very concerned that the many marginalised sections of society – youth, indigenous people, are not inside the front and centre of this agenda,” he added.

Khoisan Chief Zenzile says land developments on indigenous land are the 'most ridiculous notion'
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Khoisan Chief Zenzile says land developments on indigenous land are the ‘most ridiculous notion’

As we speak, the sounds of construction echo around us. We are standing in a curated indigenous garden as South Africa’s Amazon headquarters is being built nearby.

After years of being sidelined by the government in a deal that centres around construction on sacred Khoisan land, Chief Zenzile said he negotiated directly with the developers to build the heritage centre and sanctuary as a trade-off while retaining permanent ownership of the land.

“There are many people who like to fetishise indigenous people who want to relegate us to an anthropoid state, as if that is the only place we can, as if we don’t have the tools to navigate the modern world,” he says when I ask about modern buildings towering over the sacred land.

“That is the most ridiculous notion – that the entire world must progress and we must be relegated to a state over which we have no agency.”

An hour and a half from Cape Town’s centre, Khoi-San communities have seized 2,000 hectares of land that they say historically belongs to them.

Knoflokskraal is a state where they exercise full agency – filling in the infrastructural gaps around water and electricity supply that the provincial government will not offer to residents it categorises as “squatters”.

“We are – exactly today – here for five years now,” Dawid De Wee, president of the Khoi Aboriginal Party, tells us as he gives us a tour of the settlement. “There are more or less around 4,000 of us.

“The calling from our ancestral graves sent us down here, so we had an urge to get our own identity and get back to our roots, and that was the driving motive behind everything we are here now to take back our ancestral grounds.”

'We are here now to take back our ancestral grounds,' Dawid De Wee says
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‘We are here now to take back our ancestral grounds,’ Dawid De Wee says

Dawid says they have plans to expand to reclaim more swathes of land stolen from them by European settlers in the 1600s across the Cape Colony.

Land reform is a contentious issue in post-Apartheid South Africa, with a white minority still owning a majority of the land.

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Indigenous land is even further down the agenda of reparations, and South Africa’s oldest communities continue to suffer from historic dispossession and marginalisation.

For many Khoi-San leaders, G20 represents the ongoing exclusion from a modern South African state.

They have not been invited to officially participate in events where “solidarity, equality and sustainability,” are being discussed without reference to their age-old knowledge.

Instead, we meet Khoi-San Queen Eloise at a gathering of tribal leaders from around the world on the most southwestern tip of Africa in Cape Point called the World Tribal Alliance.

Khoi-San Queen Eloise tells Sky that the G20 'is a politically-based gathering'
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Khoi-San Queen Eloise tells Sky that the G20 ‘is a politically-based gathering’

“In order for us to heal, Mother Nature and Mother Earth is calling us, calling our kinship, to come together – especially as indigenous people because with indigenous people we are still connected to our lands, to our intellectual property we are connected to who we are,” Queen Eloise tells us.

“G20 is a politically-based gathering – they are coming together to determine the future of people politically.

“The difference is that we will seek what Mother Earth wants from us and not what we want to do with technology or all those things politically, but the depth of where we are supposed to go.”

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Britain rattles its sabre at Russia’s spy ship – but is it a hollow threat?

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Britain rattles its sabre at Russia's spy ship - but is it a hollow threat?

A fierce warning from Britain’s defence secretary to Vladimir Putin to turn his spy ship away from UK waters or face the consequences was a very public attempt to deter the threat.

But unless John Healey backs his rhetoric up with a far more urgent push to rearm – and to rebuild wider national resilience – he risks his words ringing as hollow as his military.

The defence secretary on Wednesday repeated government plans to increase defence spending and work with NATO allies to bolster European security.

Russian Ship Yantar transiting through the English Channel. 
File pic: MOD
Image:
Russian Ship Yantar transiting through the English Channel.
File pic: MOD

Instead of focusing purely on the threat, he also stressed how plans to buy weapons and build arms factories will create jobs and economic growth.

In a sign of the government’s priorities, job creation is typically the top line of any Ministry of Defence press release about its latest investment in missiles, drones and warships rather than why the equipment is vital to defend the nation.

I doubt expanding employment opportunities was the motivating factor in the 1930s when the UK converted car factories into Spitfire production lines to prepare for war with Nazi Germany.

Yet communicating to the public what war readiness really means must surely be just as important today.

Russia's President Vladimir Putin. Pic: Reuters
Image:
Russia’s President Vladimir Putin. Pic: Reuters

Mr Healey also chose this moment of national peril to attempt to score political points by criticising the previous Conservative government for hollowing out the armed forces – when the military was left in a similarly underfunded state during the last Labour government.

A report by a group of MPs, released on the same day as Mr Healey rattled his sabre at Russia, underlined the scale of the challenge the UK faces.

HMS Somerset flanking Russian ship Yantar near UK waters. on January 22, 2025.
File pic: Royal Navy/PA
Image:
HMS Somerset flanking Russian ship Yantar near UK waters. on January 22, 2025.
File pic: Royal Navy/PA

It accused the government of lacking a national plan to defend itself from attack.

The Defence Select Committee also warned that Mr Healey, Sir Keir Starmer and the rest of the cabinet are moving at a “glacial” pace to fix the problem and are failing to launch a “national conversation on defence and security” – something the prime minister had promised last year.

The report backed up the findings of a wargame podcast by Sky News and Tortoise that simulated what might happen if Russia launched waves of missile strikes against the UK.

The series showed how successive defence cuts since the end of the Cold War means the army, navy and air force are woefully equipped to defend the home front.

Read more:
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Briton who volunteered as spy for Russia jailed

But credible national defences also require the wider country to be prepared for war.

A set of plans setting out what must happen in the transition from peace to war was quietly shelved at the start of this century, so there no longer exists a rehearsed and resourced system to ensure local authorities, businesses and the wider population know what to do.

John Healey.
Pic: PA
Image:
John Healey.
Pic: PA

Mr Healey revealed that the Russian spy ship had directed a laser light presumably to dazzle pilots of a Royal Air Force reconnaissance aircraft that was tracking it.

“That Russian action is deeply dangerous,” he said.

“So, my message to Russia and to Putin, is this: We see you. We know what you are doing. And if Yantar travels south this week, we are ready.”

He did not spell out what this might mean but it could include attempts to block the Russian vessel’s passage, or even fire warning shots to force it to retreat.

The Russian ship Yantar is docked in Buenos Aires in 2017
Pic: David Fernandez/EPA-EFE/Shutterstock
Image:
The Russian ship Yantar is docked in Buenos Aires in 2017
Pic: David Fernandez/EPA-EFE/Shutterstock

However, any direct engagement could trigger a retaliation from Moscow.

For now, the Russian ship – fitted with spying equipment to monitor critical national infrastructure such as communications cables on the seabed – has moved away from the UK coast. It was at its closest between 5 and 11 November.

The military is still tracking its movements closely in case the ship returns.

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