While North Korea has been supplying weapons to Russia for some time, the arrival of troops is a major escalation in its involvement in the war of Ukraine.
The first official evidence of large numbers of North Korean troops entering Russia was provided by the South Korean government, who last week published a press release outlining the increasingly close military cooperation between the two states.
Image: A map of sites in the Russian far east linked to the reported presence of North Korean soldiers
According to the press release, an initial contingent of 1,500 North Korean special forces troops were transported on Russian naval ships to the port city of Vladivostok.
The South Koreans provided two high-resolution satellite images showing what they say are these troops in two sites in Russia.
The first shows a crowd of what the South Korean government estimates is 400 people assembled in an open space within a Russian military site close to the town of Ussuriysk, 98 kilometres north of Vladivostok.
Image: Image released by South Korean intelligence purportedly showing North Korean troops at a Russian military site
The second image shows a smaller number of people, which the South Korean government state are around 250 North Korean soldiers.
Image: Satellite image released by South Korean intelligence purportedly showing North Korean troops at a Russian military site
This image was captured further north than the first. It shows an area that appears to be a military site close to the city of Khabarovsk in the Russian far east.
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Footage circulating online
Amid reports of North Koreans entering Russia, several videos circulated widely.
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While Sky News cannot confirm they show North Korean troops, one shows a group of soldiers of east Asian appearance. The person filming the video states they are North Korean, referring to them as ‘allies’.
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This video has been geolocated by Sky News to the town of Sergeyevka in the Russian far east.
A second video filmed nearby shows a group of soldiers training in a field at the same site.
Filmed from over a wall, the footage is too grainy to allow the soldiers to be identified visually, however, many have claimed it shows North Korean troops.
A third video, released by the Ukrainian government, shows troops being equipped. While it is not possible to geolocate this footage, the presence of boxes marked in Russian has been cited as evidence this shows North Korean troops in Russia.
What satellite images can tell us
While currently available videos do not tell a full story, more can be learned from satellite imagery.
An image captured by Maxar of the site in Sergeyevka shows the sudden appearance of trenches on the grounds of the base in early October.
Image: Equipment visible in a military site purportedly housing North Korean troops in Russia. Pic: Maxar
Later in the month, equipment can be seen assembled in an area in the south of the site, showing it has remained in use. This coincides with the reported arrival of troops in the area and the appearance of the videos, and fits with reports that the North Koreans are training in the area.
Available satellite imagery appears to show that a nearby training site in Lifarevka is also currently in use.
A comparison of low and high-resolution imagery captured over the month of October shows several huts appear to have been renovated at the site.
Image: Renovated huts and evidence of training activities at a Russian military site. Pic: Maxar
Training trenches and signs of activity can be seen in high-resolution images captured on 24 October.
Fighting in the Ukrainian frontlines often involves the use of trenches resembling those seen at both sites.
A North Korean flag appears on the frontline
Amid reports of North Korean troops being prepared for fighting in Ukraine, an image showing the North Korean flag next to that of Russia went viral.
Image: A North Korean flag flying in Russian-held territory close to the Ukrainian frontline
Sky News has geolocated this to a former mining facility between the towns of Hirnyk and Tsukuryn in eastern Ukraine.
The site sits close to the frontline, with Tsukuryn being captured by the Russians in early October.
While the presence of the North Korean flag does not necessarily signal their arrival in Ukraine, it does suggest that frontline Russian forces are aware of North Korea’s increasing involvement in the conflict.
A deepening relationship between North Korea and Russia will also deepen China’s growing sense of unease about how close these two countries are becoming.
If thousands of North Korean troops head to Russia and on to the battlefield in Ukraine the conflict widens, drawing in an unstable and unpredictable partner in North Korea’s Supreme Leader, Kim Jong Un.
China’s President Xi Jinping does not like an uncertain outcome.
This deployment has all the hallmarks of one.
If North Koreans are killed in war, pictures of dead soldiers could lead to impulsive action from Kim.
South Korea is seriously alarmed. But there’s little it can do about it. The worry is South Korea may be tempted to get more directly involved in the war on behalf of the enemy of their enemy – Ukraine.
The Korean Peninsula needs stability right now, the atmosphere has been highly charged all year.
When Kim Jong Un and Russian President Vladimir Putin signed a treaty with a mutual defence clause in Pyongyang in June, it was unclear what this would mean on the ground.
Now we know. It could mean boots on the ground.
China shares its border with both Russia and North Korea.
If these two nuclear armed countries start fighting alongside each other, President Xi has every reason to be alarmed.
Weapon deliveries
North Korean support for the Russian war effort is not a new phenomenon.
In October 2023, the White House released imagery showing a Russian ship collecting containers of what the Americans claim were weapons from the North Korean port of Rason.
Prior to this time, the port at Rason had largely been empty. Sky News found there was little activity at its piers until the late summer, after which an increasing number of ships were visible throughout the autumn and winter.
Image: A ship at a pier known to be used in the transfer of arms from North Korea to Russia
Between late August and mid-February, Sky News recorded 34 days during which ships were visible at Rason’s once-empty piers.
While it is not publicly known how much weaponry has been provided by North Korea, the White House alleged in February that 10,000 containers of ammunition and other military materials had been sent since September 2023.
The Data and Forensics team is a multi-skilled unit dedicated to providing transparent journalism from Sky News. We gather, analyse and visualise data to tell data-driven stories. We combine traditional reporting skills with advanced analysis of satellite images, social media and other open source information. Through multimedia storytelling we aim to better explain the world while also showing how our journalism is done.
Donald Trump’s eldest son has said his father may walk away from the Ukraine peace process, claiming the issue is not a priority for Americans, and signalling Europe needs a better plan.
In a wide-ranging discussion with Sky’s lead world news presenter Yalda Hakim at Doha Forum 2025, Donald Trump Jr addressed issues including the US administration’s recent diplomatic efforts around the world.
He was speaking in his capacity as a business leader, setting out his agenda for “America first” investments in defence technology and artificial intelligence (AI), drawing a direct line between global stability and economic prosperity.
Image: Donald Trump meeting Volodymyr Zelenskyy in Washington earlier this year. Pic: Reuters
When asked directly if he believed the US president would walk away from Ukraine, he answered: “I think he may, what’s good about my father and what’s unique about my father is you don’t know what he’s going to do. He’s unpredictable.”
President Trump has led renewed efforts for a ceasefire deal with Russia in recent months.
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Drawing a parallel with his father’s current “war” on drug cartels, Donald Trump Jr described gangs bringing illegal drugs into America as a “far greater clear and present danger to the US than anything [going on] in the Ukraine or Russia”.
While he said he did not believe Ukraine would be “abandoned”, he said: “The American public doesn’t have the appetite [for endless wars and further funding of Ukraine’s military efforts].”
Describing Ukraine as “a far more corrupt country than Russia”, he characterised Ukrainian President Zelenskyy as “one of the great marketeers of all time”, who he said had become “a borderline deity, especially to the left”.
He went on to describe President Trump’s approach as “common sense”.
China rivalry was the focus, but Musk got a mention
In a country and at a conference which is friendly, even admiring of the Trump administration, Don Jr was in his element.
He’s here in his capacity as a business leader, promoting his venture, 1789 Capital which claims to be focused on “America First” investments.
But he wasn’t shy about discussing his father’s foreign policy achievements, boasting that Donald Trump had resolved seven or eight wars – conflicts that most ordinary Americans were unaware of.
His pitch is bullish and direct – the current US administration is projecting strength globally, stopping wars and creating investment opportunities which serves the American economy. It’s the MAGA mentality for the global audience.
It’s clear that the rivalry with China is their biggest focus, especially finding ways to combat their dominance over critical minerals.
“America can no longer just sit there and hope that China is going to be a good actor… I think the rest of the world understands that they want America to be at the forefront of all of that.”
When I asked him about recent efforts by President Trump to bring the war in Ukraine to an end, he responded forcefully. “We want peace, we want to stop the death.”
But he went on to say that Europe needed to shoulder the burden and currently they have no plan.
As he sat on the stage in Qatar, the country which has been at the centre of the ceasefire efforts for Gaza, he expressed hope that peace would prevail, but balanced expectations America would fund its re-construction. This would have to be a global effort.
“If there’s one thing my father is, it’s a builder… I think he can be the greatest construction manager in the history of the world, but no one in America wants to bear the entire responsibility of that.”
And, away from international diplomatic efforts, he was happy to announce a breakthrough closer to home.
The “bromance” with Elon Musk and President Trump is back on – calling the entrepreneur a “generational talent, a generational level of genius”.
‘Bromance’ back on
He also confirmed that Tesla billionaire Elon Musk was “100% back in the fold”, after previously appearing to fall out with the president.
Earlier this year, Donald Trump Jr’s investment company, 1789 Capital, heavily invested in some of Musk’s companies, including SpaceX.
Image: Elon Musk and Donald Trump in the Oval Office at the White House in May. Pic: AP
Directly comparing President Trump with Musk, he said: “Imagine dealing with one Donald Trump – now I have to deal with two.
“They’re very similar that way, so it created some headaches… but the reality is they’re both very much aligned, they’re on message with what we want to do with our country. What we want to do with freedom of speech.”
He went on: “Elon did incredible things for Twitter, really allowed the democratisation of truth and freedom and free speech to occur. That’s something that is a true threat in America right now.”
He also praised Musk as “changing the face of free speech, science and technology”, adding, “we have to protect our geniuses”.
When asked whether Mr Trump would stand for a third term, he joked that he could be “just trolling” those on the left.
He went on, “He’s the most unpredictable person, probably in the history of politics. Which is why he’s able to get something done. We’ll see.”
A hidden, underground military base in eastern Ukraine is so secret, soldiers change into civilian clothes whenever they step outside to avoid drawing attention.
Journalists are not usually allowed access.
But the unit that has been using this vast, subterranean warren of war rooms, a dormitory, kitchen, canteen and makeshift gym as its headquarters since the summer is imminently relocating, so Sky News was invited inside.
Lieutenant Colonel Arsen Dimitric – call sign Lemko – is the chief of staff of 1st Corps Azov of the National Guard of Ukraine, one of the country’s most effective combat forces.
Image: Lemko
He sat with us in the base, next to a large square table, covered by a map of the Donbas region.
His soldiers have been fighting in this area since the summer, countering a surge in Russian attacks in and around the frontline city of Pokrovsk.
“We aim to destroy as much of the enemy as possible,” he said.
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“Will we take losses? Yes. Will it hurt? Absolutely.”
But he said if Russia is allowed to advance, even more Ukrainians will suffer.
“Their [the Russians’] only advantage is numbers,” he said.
“They don’t care how many people they lose.”
Lemko said almost 17,000 Russian soldiers had been killed or wounded fighting in this section of the warzone alone between August to November.
Ukrainian video footage of the battlefield showed Russian armoured vehicles being taken out by drones and artillery fire.
At one point, Russian soldiers mounted on motorbikes try to advance, only to be stopped by Ukrainian fire.
“Our task is to hit them as hard as possible in various areas,” Lemko said. “We focus on our operations, others on theirs, and leadership will negotiate the best possible terms.”
The Azov Corps soldiers are fighting over land that should be handed over to Russia, according to an initial draft of a peace deal proposal between Kyiv and Moscow put forward by the United States. This is despite swathes of the Donbas remaining under Ukrainian control.
But General Oleksandr Syrskyi, the head of the Ukrainian armed forces, has since told Sky News that simply surrendering territory would be “unacceptable”.
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Giving up territory ‘unacceptable’, Ukraine’s military chief says
For Lemko, he says the job of his troops is to inflict as much damage as possible on the Russian side to help strengthen Ukraine’s hand in negotiations.
“Simply giving it [land] away isn’t the way,” he said.
“Diplomats do their work, we do ours. Our job as soldiers is to give as many advantages as possible to our negotiating team. And we’re doing exactly that.”
Lemko, who has been battling against Russia since the Crimean annexation in 2014, also had a warning for the rest of Europe about a rise in hybrid attacks, such as mysterious drone sightings, acts of sabotage and cyber hacks suspected of being linked to Moscow.
He said Ukraine’s experience showed that if attacks by Russia that fall under the threshold of conventional war are not successfully countered, full-scale conflict could follow.
“Ukraine once lost a hybrid war that had been waged since the very start of our independence,” he said.
“Because of that defeat, there was a physical operation against us in Crimea and then a physical operation in 2022.
“Now the hybrid war has reached its climax, and it is moving into the Baltic States and Europe.
“That is why, in my opinion – and in the opinion of most of our officers – now is the moment for all countries to unite and counter this hybrid war. Because the consequence may be a physical one.”
Production: Katy Scholes, security and defence producer, and Azad Safarov, Ukraine producer.