Sitting on the Dnipro River in Russian-occupied Ukraine is Europe’s largest nuclear power station – on the frontline of a worsening war.
Over a period of a few weeks we spoke to two workers at the Zaporizhzhia plant.
And the warnings they gave of what could happen should send a cold chill around the world.
The interviews were conducted on the condition of anonymity and at great personal risk to them. They told us that if they were caught, they could be tortured, imprisoned, or worse. They know the dangers but still wanted to be heard.
Neither of the technicians knew that we were talking to the other. But their testimony of the possibility of a major nuclear catastrophe was worryingly familiar. One of the men, who we will call Serhii, warned the consequences could cause devastation across much of Europe, Russia and the Mediterranean.
“The level of radioactive pollution, and most importantly the area of contamination, will be thousands of square kilometres of land and sea… it would be much, much worse than Fukushima and worse than Chernobyl.”
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While some nuclear experts think that such an eventuality is unlikely, others have told us it’s a possible worst case scenario.
The Zaporizhzhia nuclear plant was captured by Russian forces in March last year at the beginning of Moscow’s invasion of Ukraine. Since then there have been major concerns about safety at the plant. Not least of all because heavy weapons, including shells and rockets, have hit the buildings.
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Both sides blame each other. But our sources told us that Russia has been deliberately targeting power lines to disrupt the flow of electricity to Ukraine. These lines are essential for plant safety and the cooling mechanism of the reactors.
For 30 years, workers at Europe’s largest nuclear power station couldn’t imagine that there could be a power outage.
Since Russian forces occupied the site last year it has happened seven times.
The back-up generators we were told are also not being properly maintained, the other man, Mykola, told us that this was because of staff shortages.
He says that before the war there were 11,000 staff at the plant and now there may be as few as 3,500.
“There is the same deficit of workers for repairs who can actually do the servicing and fix problems. The quality of the workers is lower because the qualified staff left. So generally the situation here is deteriorating.”
Five of the six reactors are now in cold shutdown, but there are fears Russia may use the power plant to stage a false flag attack.
Ukraine’s defence ministry alleges Moscow could be about to simulate a major accident, such as a radioactive leak, as a way of stopping any Ukrainian counteroffensive in the south of the country.
Image: Satellite view of Zaporizhzhia nuclear power plant on fire
Ukraine is expected to order its troops to reclaim territory lost at the beginning of the war in the coming weeks.
The power station has been under occupation now for 15 months and the technicians have told us that in the last few weeks the level of military activity has increased dramatically.
They’ve witnessed Russian forces, moving more armour, more ammunition and more guns into place as they fortify their positions.
Serhii says that he thinks it’s because they know the nuclear plant is safe from Ukrainian strikes.
“Ukrainian armed forces will not shell the station. That’s why they are multiplying the numbers of troops and vehicles here because if they did it in another place they would definitely get shelled by the armed forces of Ukraine.
“The thing is, one month and half ago there were two times less troops on the power station and now there are two times more which means they are definitely preparing for the counteroffensive.”
Image: The men spoke to Sky News about their experience at the plant
Mykola told us it’s a frightening place to work, but he has no choice.
“Everyone has their own story. And I think the most important thing is not to get into their hands because it’s unlikely you will get out and still be the human you were when you went in.”
The International Atomic Energy Agency is carrying out inspections, but it continues to express grave concerns about the nuclear plant and is calling for the area to be demilitarised immediately.
But there is no sign that will happen. In fact, it’s quite the opposite.
Donald Trump’s special envoy Steve Witkoff has met Vladimir Putin for talks in Russia – as the US president called on Moscow to “get moving” with ending the war in Ukraine.
Mr Witkoff, who has been pressing the Kremlin to accept a truce, visited Mr Putin in St Petersburg after earlier meeting the Russian leader’s international co-operation envoy Kirill Dmitriev.
Mr Putin was shown on state TV greeting Mr Witkoff at the city’s presidential library at the start of the latest discussions about the search for a peace deal on Ukraine.
Before Friday’s meeting, Kremlin spokesman Dmitry Peskov played down expectations of a breakthrough and told state media the visit would not be “momentous”.
However, Sky News Moscow correspondent Ivor Bennett said he believes the meeting – Mr Witkoff’s third with Mr Putin this year – is significant as a sign of the Trump administration’s “increasing frustration at the lack of progress on peace talks”.
Earlier on Friday, Mr Trump issued his latest social media statement on trying to end the war, writing on Truth Social: “Russia has to get moving. Too many people ere [sic] DYING, thousands a week, in a terrible and senseless war – A war that should have never happened, and wouldn’t have happened, if I were President!!!”
Dialogue between the USand Russia, aimed at agreeing a ceasefire ahead of a possible peace deal to end the war, has recently appeared to have stalled over disagreements around conditions for a full pause.
Image: Mr Trump, pictured at a cabinet meeting at the White House earlier this week, has called for Russia to ‘get moving’. Pic: AP
Secondary sanctions could be imposed on countries that buy Russian oil, Mr Trump has said, if he feels Moscow is dragging its feet on a deal.
Mr Putin has said he is ready in principle to agree a full ceasefire, but argues crucial conditions have yet to be agreed – and that what he calls the root causes of the war have yet to be addressed.
The Russian president wants to dismantle Ukraine as an independent, functioning state and has demanded Kyiv recognise Moscow’s annexation of Crimea and other partly occupied areas, and pull its forces out, as well as a pledge for Ukraine to never join NATO and for the size of its army to be limited.
Zelenskyy renews support calls after attack on home city
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Children killed in strike on Zelenskyy’s home town
Speaking online at a meeting of the so-called Ramstein group of about 50 nations that provide military support to Ukraine, named after a previous meeting at America’s Ramstein air base in Germany in 2022, Mr Zelenskyy said recent Russian attacks showed Moscow was not ready to accept and implement any realistic and effective peace proposals.
Mr Zelenskyy also made his evening address to the nation, saying: “Ukraine is not just asking – we are ready to buy appropriate additional systems.”
The UK’s defence secretary, John Healy, has said this is “the critical year” for Ukraine – and has confirmed £450m in funding for a military support package.
A family of five Spanish tourists, including three children, have been killed in a helicopter crash in New York City.
A New York City Hall spokesman identified two of those killed as Agustin Escobar, a Siemens executive, and Merce Camprubi Montal – believed to be his wife, NBC News reported.
The pilot was also killed as the aircraft crashed into the Hudson River at around 3.17pm on Thursday.
New York Police commissioner Jessica Tisch said divers had recovered all those on board from the helicopter, which was upside down in the water.
“Four victims were pronounced dead on scene and two more were removed to local area hospitals, where sadly both succumbed to their injuries,” she said.
Image: The helicopter was submerged upside down in the Hudson. Pic: Reuters
Image: A crane lifted out the wreckage on Thursday evening. Pic: AP
The Spanish president Pedro Sanchez called the news “devastating”.
“An unimaginable tragedy. I share the grief of the victims’ loved ones at this heartbreaking time,” he wrote on X.
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The aircraft was on a tourist flight of Manhattan, run by the New York Helicopters company.
Witnesses described seeing the main rotor blade flying off moments before it dropped out the sky.
Image: Agustin Escobar and Merce Camprubi Montal.
Pic: Facebook
Lesly Camacho, a worker at a restaurant along the river in Hoboken, said she saw the helicopter spinning uncontrollably before it slammed into the water.
“There was a bunch of smoke coming out. It was spinning pretty fast, and it landed in the water really hard,” she said.
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Witness saw ‘parts flying off’ helicopter
Another witness said “the chopper blade flew off”.
“I don’t know what happened to the tail, but it just straight up dropped,” Avi Rakesh told Sky’s US partner, NBC News.
Video on social media showed parts of the Bell 206 helicopter tumbling through the air and landing in the river.
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1:59
New York mayor confirms six dead
Image: The crash happened near Pier 40. Pic: AP
New York Mayor Eric Adams confirmed the six deaths and said authorities believed the tourists were from Spain.
He said the flight had taken off from a downtown heliport at around 3pm.
Image: Pic: Cover Images/AP
The crash happened close to Pier 40 and the Holland tunnel, which links lower Manhattan’s Tribeca neighbourhood with Jersey City to its west.
Tracking service Flight Radar 24 published what it said was the helicopter’s route, with the aircraft appearing to be in the sky for 15 minutes before the crash.
The Federal Aviation Administration and the National Transportation Safety Board have started an investigation.
A former ballerina who spent more than a year in a Russian jail for donating £40 to a charity supporting Ukraine has returned home to the US after being freed in a prisoner exchange.
Ksenia Karelina landed at Joint Base Andrews in Maryland at around 11pm, local time, on Thursday.
A smiling Ms Karelina was greeted on the runway by her fiance, the professional boxer Chris van Heerden, and given flowers by Morgan Ortagus, President Donald Trump’s deputy special envoy to the Middle East.
Image: Ksenia Karelina arrives at Joint Base Andrews. Pic: AP
Van Heerden said in a statement he was “overjoyed to hear that the love of my life, Ksenia Karelina, is on her way home from wrongful detention in Russia.
“She has endured a nightmare for 15 months and I cannot wait to hold her. Our dog, Boots, is also eagerly awaiting her return.”
He thanked Mr Trump and his envoys, as well as prominent public figures who had championed her case, including Dana White, a friend of Mr Trump and CEO of the Ultimate Fighting Championship (UFC).
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Ms Karelina, 34, a US-Russian citizen also identified as Ksenia Khavana, was accused of treason when she was arrested in Yekaterinburg, in southwestern Russia, while visiting family in February last year.
Investigators searched her mobile phone and found she made a $51.80 (£40) donation to Razom, a charity that provides aid to Ukraine, on the first day of Russia’s invasion in 2022.
She admitted the charge at a closed trial in the city in August last year and was later jailed for 12 years, to be served in a penal colony.
At a cabinet meeting on Thursday, Mr Trump, who wants to normalise relations with Moscow, said the Kremlin “released the young ballerina and she is now out, and that was good. So we appreciate that”.
Image: Ksenia Karelina is hugged by her boyfriend, Chris van Heerden. Pic: Reuters
Russian security services accused her of “proactively” collecting money for a Ukrainian organisation that was supplying gear to Kyiv’s forces.
The First Department, a Russian rights group, said the charges stemmed from a $51.80 donation to a US charity aiding Ukraine.
Washington, which had called her case “absolutely ludicrous”, released Arthur Petrov, who it was holding on charges of smuggling sensitive microelectronics to Russia, in the prisoner swap in Abu Dhabi.
Karelina was among a growing number of Americans arrested in Russia in recent years as tensions between Moscow and Washington spiked over the war in Ukraine.
Her release is the latest in a series of high-profile prisoner exchanges Russia and the US carried out in the last three years – and the second since Mr Trump took office.
White House national security adviser Mike Waltz said members of the Trump administration “continue to work around the clock to ensure Americans detained abroad are returned home to their families”.