Headlights illuminate a group of soldiers smoking and drinking steaming cups of coffee on the side of a road in northeastern Ukraine.
A fine sleet on another freezing night falls on the silhouetted barrel of a Soviet-era anti-aircraft gun mounted on an ancient, battered lorry.
These are the men of a mobile air defence unit, preparing for another night of tracking and attempting to shoot out of the skies the Russian drones heading for cities and power plants across Ukraine.
We joined the units over 48 hours in the southern sector of the city of Sumy, near the border with Russia.
Captain Serhii, of the 117th Brigade, is a commander in charge of 160 of these men in eight mobile units protecting this area of northeastern Ukraine.
Image: Commander Serhii looking for drones on his scanner
We met up with him in an empty car park next to a high-rise apartment block in Sumy.
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Sitting in his 4×4 he squinted in concentration as his scanner showed a handful of drones on a flight path heading towards us from Russia.
Air raid sirens blared in the background.
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He signalled for us to follow, and he sped off into the night weaving through checkpoints along empty, darkened country roads.
He had said the drone was near, but we were confused when he suddenly pulled off the road and jumped out of his cab.
Within moments the skies were lit up by mobile anti-aircraft batteries firing into the sky.
Tracers from the bullets flew over our heads and above us we could hear the monotonous sound of the drone as it passed overhead.
Searchlights reflected off a dank, dense fog that had enveloped the countryside criss-crossed in the sky as the units tried to spot the drone.
They didn’t spot or hit the drone, and slowly the sound of its motors grew dimmer and dimmer until there was silence.
“You can see the current weather conditions, it’s foggy, so we’re basically working off sound alone, as thermal imaging and other devices can’t pick them up,” Captain Serhii told me.
“A spotlight is completely pointless, the speed of these drones isn’t particularly high, so technically, we could hit them, but the weather makes it impossible,” he added.
Every night across Ukraine the tarpaulin covers are pulled off these Soviet-era anti-aircraft guns and prepared for action.
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On battered trucks they rumble into the night to take up defensive positions.
These old guns are the country’s main defence against an increasing number of drone attacks from Russia.
The units here say they mostly encounter two types of drones which are usually deployed at the same time: Gerberas and Shaheds.
Gerberas do not carry an explosive payload but instead are designed to confuse Ukraine’s air defence, while the Iranian-supplied Shahed drones carry explosives with pre-programmed targets.
One of the soldiers, Volodymyr, tracks the drones on a handheld tablet. All the men wait, watch the screen, and listen.
“They generally fly between 200-300m up to 3km,” Volodymyr tells me.
“If they’re flying lower than 300m above sea level, the radar won’t pick them up.”
The men start to gather around their anti-air battery unit as a drone flies closer towards our location.
Image: Stuart Ramsay and Volodymyr
The gunner then jumps onto the truck and searches for the target on a radar attached to his weapon.
He will fire when it’s within a 10km range of his position.
The night-time silence in the middle of the field is suddenly shattered by the deafening sound of firing as the gunner goes for the drone.
Then in the fields all around us other units join the attack – it’s so dark we had no idea they were even there.
It’s absolutely relentless.
Captain Serhii tells me their critical job would be made easier with more sophisticated weapons like the American-made Patriot system.
“We need a stronger, more automated air defence system that operates independently of human involvement,” he said.
“Winter is approaching, and our guys who are on duty 24/7 will face incredibly tough conditions, they aren’t made of steel, so having an automated system would be ideal.”
Image: Anti-aircraft unit firing at drones from their truck
He believes any political negotiations with Russia will just end badly for Ukraine.
“A frozen conflict is typically just a temporary pause, and you can’t trust [Russian President Vladimir] Putin, because any agreement made will likely work in Russia’s favour,” he told me.
“They’ll stockpile resources, more Shaheds, rockets, soldiers, even North Koreans, and then they’ll return, and they’ll come back stronger than they did in 2022.”
The Israeli Air Force is regarded as one of the country’s most elite units.
So, when hundreds of current and former pilots call for an end to the war in Gaza to get the hostages out, Israelis take notice.
This month, 1,200 pilots caused a storm by signing an open letter arguing the war served mainly “political and personal interests and not security ones”.
But Guy Paron, a former pilot and one of those behind the letter, said the Israeli government had failed to move to phase two of the ceasefire deal with Hamas, brokered under US President Donald Trump.
That deal called for a full withdrawal of Israeli forces from Gaza and the release of all the remaining hostages. Mr Netanyahu continues to argue that the war must continue to put pressure on Hamas.
Mr Paron said the (Israeli) government “gave up or violated a signed agreement with Hamas” and “threw it to the trash”.
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“You have to finish the deal, release the hostages, even if it means stopping that war,” he argued.
It’s not the first time Israeli pilots have taken up a cause. Many of them also campaigned against Mr Netanyahu’s 2023 judicial reforms.
“In this country, 1,000 Israeli Air Force pilots carry a lot of weight,” Mr Paron added.
“The Air Force historically has been the major force and game-changer in all of Israel’s wars, including this current one. The strength of the Air Force is the public’s guarantee of security.”
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1:05
UN runs out of food aid in Gaza
Anti-government campaign spreads
Now, the open letter campaign has spread to other parts of the military.
More than 15,000 people have signed, including paratroopers, armoured corps, navy, special units, cyber and medics. The list goes on.
Dr Ofer Havakuk has served 200 days during this war as a combat doctor, mostly in Gaza, and believes the government is continuing the war to stay in power.
He has also signed an open letter supporting the pilots and accused the prime minister of putting politics first.
Image: Israeli Prime Minister Benjamin Netanyahu described the authors of the original letter as ‘bad apples’. Pic: AP
He said Mr Netanyahu “wants to keep his coalition working and to keep the coalition together. For him, this is the main purpose of the war”.
A ceasefire could lead to the collapse of the prime minister’s fragile far-right coalition, which is opposed to ending the war.
Threat of dismissal
The Israeli military has threatened to dismiss those who have signed protest letters.
We met a former pilot who is still an active reservist. He didn’t want to be identified and is worried he could lose his job.
“This is a price that I’m willing to pay, although it is very big for me because I’m volunteering and, as a volunteer, I want to stay on duty for as long as I can,” he told us.
The controversy over the war and the hostages is gaining momentum inside Israel’s military.
It is also exposing deep divisions in society at a time when there is no clear sign about how the government plans to end the war in Gaza, or when.
The renewed war in Gaza over the last year and a half followed deadly Hamas attacks on Israel on 7 October 2023, which killed 1,200 people, mostly civilians, and saw around 250 taken hostage.
More than 51,000 people have been killed in Gaza during the Israeli military’s response, many of them civilians, according to the enclave’s Hamas-run Ministry of Health.
The smell of explosives is still in the air when we arrive.
Hours before, a displacement camp in Atbara housing families who fled the war in Sudan’s capital Khartoum was hit by two drone strikes in a four-pronged attack.
The first bomb on 25 April burned donated tents and killed the children in them.
The second hit a school serving as a shelter for the spillover of homeless families.
Chunks of cement and plaster had been blasted off the walls of the classrooms where they slept when the second explosive was dropped.
Blood marked the entrance of the temporary home closest to the crater.
Inside, shattered glass and broken window frames speak to the force of the explosion. We were told by their neighbours that four people in the family were instantly killed.
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“People were torn apart. This is inhumane,” says their neighbour Mahialdeen, whose brother and sister were injured. “We are praying that God lifts this catastrophe. We left Khartoum because of the fighting and found it here.”
Wiping a tear, he says: “It is chasing us.”
The sanctuary city held by the Sudanese Armed Forces (SAF) about 200 miles northeast of Khartoum has been hit by six drone attacks by the Rapid Support Forces (RSF) since the start of the year.
These latest strikes are the most deadly.
The drones – known for targeting civilian infrastructure – hit the displacement camp twice, the nearby power station supplying the city with electricity and an empty field with four bombs in the dark, early hours of the morning. First responders have told Sky News that 12 people were killed, including at least two children.
RSF increasingly using drones to carry out attacks
Data from the conflict-monitoring organisation ACLED shows the RSF has carried out increasing numbers of drone attacks across the country.
The most targeted states have been Khartoum and North Darfur, where fighting on the ground has been fierce, as well as Atbara’s River Nile State.
The data suggests that the increase in strikes has been driven by a change in tactics following the SAF’s recapture of Khartoum in late March, with the number of strikes carried out by the RSF spiking shortly after their withdrawal from the capital.
Satellite imagery shows the RSF’s airpower has allowed it to continue to attack targets in and around Khartoum.
Nearby Wadi Seidna Airbase was targeted after the attack on Atbara, with damage visible across a large area south of its airfield.
We were given access to the remains of latest suicide drones launched at Khartoum and could not find discernible signs of commercial origin.
Drone experts told Sky News that they are self-built devices made from generic parts with no identifiable manufacturers for the components.
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1:38
Two years of war in Sudan
Drones sighted in South Darfur are consistent with Chinese models
High-resolution satellite images confirm the presence of drones at the RSF-held Nyala Airport.
While the total number of drones kept at this location is unknown, imagery from Planet Labs shows six on 24 April.
This is the highest number of drones observed at the airport, suggesting an increase in the RSF’s available airpower.
The location and number of drones visible in satellite imagery at Nyala Airport has varied over time, suggesting they are in active use.
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2:51
Yousra Elbagir visits wartorn home in Sudan
While it is not possible to determine the exact model of drones sighted at Nyala Airport, a report published by researchers at the Yale School of Public Health’s Humanitarian Lab has previously found them to be consistent with the Chinese-produced FH-95.
Analysis carried out by Sky News confirms these findings, with the measurements and visible features matching those of the CH-95 and FH-95. Both designs are produced in China.
The United Arab Emirates is widely accused of supplying Chinese drones to the RSF through South Sudan and Uganda, as well as weapons through Chad. The UAE vehemently denies these claims.
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0:45
Sudanese military in presidential palace
Evidence of new airfields
Satellite imagery viewed by Sky News suggests the RSF has worked to increase its air capabilities outside of South Darfur.
In late 2024, five new airstrips appeared in West Kordofan between the contested cities of North Darfur capital Al Fashir and Khartoum.
While the purpose of these airstrips is unknown, it is clear they carry some level of military significance, having been targeted by air in April.
In high-resolution images, no aircraft can be seen. Damage is visible next to a structure that appears to be an aircraft hangar.
The rapid escalation in drone strikes is being brutally suffered on the ground.
In Atbara’s Police Hospital, we find a ward full of the injured survivors.
One of them, a three-year-old girl called Manasiq, is staring up at the ceiling in wide-eyed shock with her head wrapped in a bandage and her feet covered in dried blood.
Her aunt tells us the explosion flung her small body across the classroom shelter but she miraculously survived.
She has shrapnel in her head and clings onto her aunt as her mother is treated for her own injuries in a ward on the first floor.
In a dark room deeper in the ward, a mother sits on the edge of a hospital bed holding her young injured daughter. Her son, only slightly older, is on a smaller adjustable bed further away.
Fadwa looks forlorn and helpless. Her children were spending the night with relatives in the temporary tents when the first strike hit and killed her eight-year-old son.
His surviving sister and brother have been asking after him, but Fadwa can’t bring herself to break the news.
“What can I say? This is our fate. We fled the war in Khartoum but can’t escape the violence,” Fadwa says, staring off in the distance.
A ship carrying humanitarian aid for Gaza has been bombed by drones while it was in international waters.
The Freedom Flotilla Coalition, the NGO responsible for the ship, has pointed the finger at Israel.
Video shows fire raging onboard the vessel, which put out an SOS distress call after it was attacked off the coast of Malta.
It comes as the case against Israel at the International Court of Justice continued this week.
Gaza remains under blockade, with Israel having now refused to allow international aid into the devastated enclave for almost two months despite global outcry.
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3:51
The hospital Ghena went to for treatment has been destroyed
Following the drone attack, the Maltese government confirmed that after several hours all crew were safe and the fire was under control.
The Freedom Flotilla Coalition said: “Israeli ambassadors must be summoned and answer to violations of international law, including the ongoing blockade (of Gaza) and the bombing of our civilian vessel in international waters.”
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It asserted that the drone attack “appears to have specifically targeted the ship’s generator” and had left the vessel at risk of sinking.
Describing the attack, it said: “Armed drones attacked the front of an unarmed civilian vessel twice, causing a fire and a substantial breach in the hull.
Image: A five-year-old boy lies on a bed at Nasser Hospital, in Khan Younis, in the southern Gaza Strip. Pic: Reuters
“The last communication in the early morning of the 2nd of May, indicated the drones are still circling the ship.”
It released video footage shot in the dark that showed lights in the sky in front of the ship and the sound of explosions. The footage also showed the vessel on fire.
The Israeli foreign ministry has not commented on what happened.
Yesterday, UN aid coordinator Tom Fletcher called on Israel to lift the blockade on Gaza, which has been in force for almost two months.
“Yes, the hostages must be released, now. They should never have been taken from their families,” he said.
“But international law is unequivocal: As the occupying power, Israel must allow humanitarian support in.”
Aid should never be a “bargaining chip”, he added.
‘Children going to bed starving’
Juliette Touma, spokesperson for the UN agency for Palestine refugees, UNRWA said: “The siege on Gaza is the silent killer of children, of older people.
“Families – whole families, seven or eight people – are resorting to sharing one can of beans or peas. Imagine not having anything to feed your children. Children in Gaza are going to bed starving.”