Ukraine has increasingly used long-range strikes and strikes against data centers to weaken Russia's ability to sustain the war.

Russia’s Rubicon drone unit, which is sent to hunt Ukrainian drone pilots, was not used to being hunted itself, Brigadier General Andrii Biletskyi told journalists on 19 October. He was summing up Operation Vivaldi, which his Third Army Corps fought in northern Donetsk Oblast from May to mid-October. Once its pilots realized they were being killed, Rubicon’s morale dropped sharply, he said.

Russia has fought for 12 years to take all of Donetsk Oblast, and Sloviansk and Kramatorsk anchor the fortress belt of cities Ukraine still holds there. Vivaldi retook 277 km² in northern Donetsk Oblast. Biletskyi says it destroyed Russia’s bridgehead on the Chornyi Zherebets River and forced Moscow to drop its plan to bypass Lyman from the north and encircle the two cities. On that front, the Third Corps had flagged Rubicon, Russia’s elite drone unit, as a threat.

Hunting the hunters

Once a Rubicon position was found, the Third Assault Brigade and the KRAKEN drone regiment committed any number of FPV and bomber drones to destroy its crews, Biletskyi said.

The brigade’s commander, Yaroslav Levenets, said his troops prepared for Rubicon’s arrival and concentrated on killing its pilots. He gave no details.

“Not stable in defense,” Levenets said of Rubicon’s troops.

They dislike sitting in trenches, he said, and under pressure they grow nervous and change positions.

Named for four seasons

Biletskyi said the name was chosen at the very start of planning, in winter 2025–2026, many months before the operation began. The original plan had four stages, one for each season, and later grew to slightly more, ArmyInform reported.

When he first unveiled the operation in September, he put it this way:

“Vivaldi, as is known, has four seasons. And this is only the first one.”

He credited two planners, known by the call signs Yurist and Leshyi. Leshyi, an assault soldier wounded seven times who later moved to staff work, was killed. Yurist was seriously wounded.

A new hand at the Third Corps

Major Dmytro Rohoziuk is now acting commander of the Third Army Corps, the corps press service said on 20 October. The press service said the move is not a transfer, and Biletskyi keeps his formal post as corps commander while he leads the “Center” grouping of the Third, 11th, and 19th corps.

Rohoziuk took over the 60th Mechanized Brigade in October 2025. Its previous commander was arrested in January after the State Bureau of Investigation accused him of embezzling about $1 million in weapons procurement. The brigade fought in all four phases of Vivaldi and retook Kolodiazi without street fighting.

Biletskyi also declined command of the Ground Forces, which oversee mobilization.

“There’s no point taking on something you don’t truly believe you can improve,” he said.

Biletskyi’s count

Russian losses in Vivaldi topped 8,000 troops, and about 270 Russian soldiers were taken prisoner, Biletskyi said. More than 20 officers surrendered, including a chief of staff and three company commanders.

The territory matters less than disrupting Russia’s strategic plan, he said. Russian forces still press toward Dobropillia, where Ukraine is counterattacking.

President Volodymyr Zelensky said Russian forces targeted energy facilities in 11 oblasts across Ukraine.

This weekly update from the Kyiv Independent aims to shed light on the situation facing Ukrainians living under Russian occupation and the ever-tightening control of information imposed by the Kremlin.

Key news as of Oct. 17:

• Eleven Ukrainians, including 96-year-old woman, return from Russian-occupied territories, ombudsman says
• Russia sends terrorism

Ukrainian infantry encircled and retook the village of Kolodiazi north of Lyman without getting drawn into street fighting, while a drone battalion kept the sky above them shut, the battalion’s chief of staff told Suspilne on 18 October. The village fell during the fourth and final phase of Operation Vivaldi, Ukraine’s counteroffensive in northern Donetsk Oblast.

For years now, Russia has aimed to seize Lyman and cross the Siverskyi Donets River. It needs this area to encircle Ukraine’s fortress belt of Donetsk Oblast cities from the northwest, ISW assesses. Vivaldi’s four phases retook 277 km² and 16 settlements on that approach, and a veteran of the operation has said Ukraine’s assault troops suffered more than ten times fewer casualties than Russian forces doing it.

Drones over the infantry

The 60th Mechanized Brigade fought in all four phases of Vivaldi and took Kolodiazi in the last one, said the chief of staff of the brigade’s Fatum unmanned systems battalion, callsign Krash.

“Our task, as an unmanned systems battalion, was to escort and ‘close’ the air in front of our infantry to make it impossible for the enemy to hit it. To suppress all the firing assets possible,” he said.

The brigade’s 3rd Mechanized Battalion, the main striking force, encircled Kolodiazi and retook it without getting drawn into street fighting, Krash said. The 1st Mechanized Battalion kept Russian reinforcements out of the area, while drone crews suppressed artillery, hit supply runs, and worked against Russian drone operators.

500 troops and 200-plus vehicles

The drone battalion killed or wounded about 500 Russian troops during the fourth phase and struck Russian armored vehicles, trucks, and motorbikes, its chief of staff said.

“More than two hundred pieces of various equipment: Grad and Uragan multiple rocket launchers, various armored vehicles, tanks, armored combat vehicles. Most of all motorbikes and quad bikes, there the count runs into the hundreds. This is our enemy’s main logistics tool,” he said.

Ghost villages

The villages retaken in northern Donetsk Oblast are nearly empty of civilians, Krash said.

“It’s very typical for de-occupied settlements: these are ghost towns. You can see right away where the occupier stepped. All the settlements are under the control of the Third Army Corps, our forces stand there and prevent enemy infiltration. But civilian life in these towns is either absent or very scarce,” he said.

Third Army Corps commander Brigadier General Andrii Biletskyi reported Kolodiazi’s liberation, along with Zelena Dolyna and Lypove, when he summed up Vivaldi’s fourth phase, which secured 101 km².

Ukrainian forces downed 289 out of the 332 drones, including jet-powered attack drones, launched by Russia overnight, the Air Force reported. Russian drones and ballistic missiles of the Iskander-M or the North Korean KN-23 model struck 22 different locations, and debris fell in three areas.

Ukraine’s Security Service (SBU) detained two men suspected of scouting targets for Russian strikes on Sloviansk and Dnipro, the agency reported on 14 October. Catching both early let it secure Ukrainian reserve command posts and the gas stations the alleged agents had been hunting, the agency added.

Sloviansk anchors the northern end of the Fortress Belt, the chain of fortified cities that has held Ukraine’s defense of Donetsk Oblast since 2014. Russia is pushing to seize them, and its aircraft bombed a residential area of Sloviansk on 11 October. Where Ukrainian convoys stop and troops gather is exactly what Russian handlers allegedly asked these suspects to supply.

A gas station worker suspected of filming convoys

The first suspect worked at a gas station complex in Sloviansk, Donetsk Oblast. Russian intelligence allegedly reached him through a former classmate who left for Russia after the full-scale invasion and now works for its special services, the SBU said. He then allegedly used his phone to secretly film Ukrainian army convoys at or near gas stations. He was allegedly supposed to send the photos and videos to Russia to help it prepare a targeted strike. He also allegedly drove his own car around other gas stations and bridges that the Defense Forces use for logistics.

Spotted through Telegram comments

The second suspect, a former Pokrovsk resident, moved to Dnipro in 2024 and settled in a dormitory. Russian intelligence noticed him through pro-Kremlin comments he posted in Telegram chats, investigators say. A female handler in Russia allegedly tasked him with guiding missile and drone attacks on places in the city where Ukrainian troops and equipment were concentrated. He allegedly scouted on foot or took public transport to reach outlying districts.

Officers seized computers and smartphones containing evidence of the men’s alleged work for Russia. Both are suspected of treason under martial law and of unauthorized dissemination of information on Ukrainian troop movements or deployment, under Articles 111(2) and 114-2(2) of the Criminal Code. They remain in custody without bail and face up to life imprisonment with confiscation of property. The SBU’s office for Donetsk and Luhansk oblasts ran the operation under the Donetsk Oblast Prosecutor’s Office.

Ukraine has completed its Operation Vivaldi, aimed at protecting its fortress belt cities of Donetsk Oblast, which helped Kyiv preserve the region from Russian occupation for 12 years. Brigadier General Andrii Biletskyi, the commander of the Third Army Corps behind the operation, has reported that the fourth phase secured 101 km² of territory. Among the latest achievements is the liberation of three settlements—Zelena Dolyna, Lypove, and Kolodiazi.

The operation's main objective was to move Ukrainian troops into more advantageous defensive positions, Biletskyi said in the first days after the operation was made public. Vivaldi has now summed up the results of all four phases: Ukraine has established full control over 16 settlements, liberated 277 km² of territory, and inflicted 8,000 casualties on Russian forces.

Ukraine worked against Russia's deadline

During Operation Vivaldi, Ukrainian forces have prevented Russian troops from outflanking the Sloviansk-Kramatorsk agglomeration and cutting the Kharkiv–Sloviansk highway, a key supply route for Ukraine’s forces in Donbas, Biletskyi says.

“We thwarted the offensive of the Zapad grouping and forced it to redeploy some units of the 1st Tank Army, which eased pressure on Kupiansk-Vuzlovyi,” Biletskyi announces.

Previously, the Institute for the Study of War noted that Russian President Vladimir Putin was confident that Russian forces would be able to seize the entire Donetsk Oblast by the end of 2026 — the Kremlin’s latest deadline for achieving this goal.

Ukraine’s military was on a mission to prevent this.

Season one: clearing russian infiltration groups

On 15 September 2026, Ukraine’s Third Army Corps announced Operation Vivaldi in northern Donetsk Oblast. During the first phase, Ukrainian troops cleared Russian groups from 75 km² of territory and liberated another 10 km².

The Third Army Corps said it had struck Russian supply routes and fuel infrastructure, prompting Russia to relocate its fuel and lubricant reserves to Voronezh Oblast. According to the corps, Russian forces lost around 1,500 troops, more than 12,000 drones, and hundreds of pieces of equipment.

Season two: liberation of Shandryholove and Derylove

On 20 September, the Third Army Corps reported the liberation of Shandryholove and Derylove and the establishment of full control over Drobysheve.

During the second season, Russian forces lost another 800 troops, bringing their total losses across the first two seasons to more than 3,000, according to the corps.

During the first two seasons of the operation, Ukrainian troops and attached units regained control of 125 km² of territory, including 50 km² that had been fully liberated.

The first phase of Vivaldi involved eliminating Russian groups that had infiltrated Ukrainian positions, explained the commander of a battalion in the 125th Brigade, callsign Darwin, per ArmyInform. After clearing those groups, the Defense Forces moved on to the operation’s second phase, using reconnaissance drones to detect Russian forces, he added.

For this, Ukraine used UAVs and ground robotic systems.

“The Third Army Corps was the first in the world to begin deploying ground robotic systems by air. Our heavy bombers deliver kamikaze ground robotic systems more than 10 kilometers behind enemy lines,” Biletskyi noted.

Season three: advances near Novе and Ridkodub

On 28 September, the Third Army Corps reported the liberation of Nove, Ridkodub, and Katerynivka and the restoration of control over Karpivka and Novomykhailivka. Ukrainian forces regained another 51 km² of territory, bringing the total area liberated since the start of the offensive to 176 km². Russian forces lost around 2,000 troops, and more than 250 were taken prisoner, the corps said in its summary of the operation’s third phase.

“The Russians were convinced that the main axis of attack was Shandryholove–Zelena Dolyna. This led it to squander its reserves in counterattacks along that very axis. The Russians slept through the actual strike, which was focused on capturing Nove,” Biletskyi said.

Operation Vivaldi aimed to disrupt Russia’s plans in Donetsk Oblast

The need for Operation Vivaldi arose amid Russian attempts to encircle Ukraine’s fortified belt in Donetsk Oblast. Ukrainian forces conducted preparatory efforts aimed at degrading Russia’s offensive capabilities, including strikes on Russian drone operators, the Institute for the Study of War reported on 9 October.

Ukrainian counterattacks in the Lyman direction and east of Sloviansk and Kramatorsk were intended to complicate Russian efforts to seize the fortified belt in Donetsk Oblast, the report noted.

The corps advanced gradually, reclaiming small areas instead of attempting a large-scale breakthrough.

The Kharkiv Regional Prosecutor's Office said that an unknown person killed five service members of Ukraine's armed forces in Kharkiv Oblast on Oct. 13

A Russian attack on Sloviansk on 13 October wounded members of a Ukrainian Red Cross team, the Ukrainian Red Cross Society reported. The same day, a Russian bomb hit the city’s invincibility point, one of the state-run hubs where residents warm up and charge phones when power goes out.

Help is getting harder to reach in Sloviansk. Public transport stopped after a Russian strike on two buses in nearby Kramatorsk killed 30 people on 8 October. From 1 November, a curfew from 16:00 to 11:00 will cover nearly all of Donetsk Oblast’s free territory. The people providing help are hit too. Russian drones struck three ambulances in Kramatorsk on 5 October. In August, a Russian strike destroyed a World Health Organization humanitarian warehouse in Dnipro.

Team had moved from Lyman

Three members of the society’s Lyman city branch were hurt. The branch had moved to Sloviansk because of the security situation and kept working there. All three were hospitalized with shrapnel wounds and burns. The building where the team worked took heavy damage, and a fire caused by the attack damaged the organization’s property.

The society’s Donetsk Oblast branch later added that a fourth person suffered a concussion, and that all four were hospitalized. The Red Cross condemned attacks on civilian infrastructure and humanitarian workers.

Bomb hit the warming center

The strike came at 12:45 in the Lisnyi microdistrict, Sloviansk city military administration head Vadym Liakh wrote. He later identified the weapon as a FAB-250, a 250-kg air-dropped bomb. Eight people were injured, and five apartment blocks were damaged, Liakh said. He described the warming center’s building as damaged, while Suspilne Donbas reported it destroyed.

Two Russian strikes on Sloviansk that day killed at least one person, Donetsk Oblast head Vadym Filashkin wrote. Liakh said a Russian attack on the Semenivka neighborhood killed a 55-year-old woman. On 14 October, Filashkin reported that Russian attacks killed three people across Donetsk Oblast on 13 October, in Sloviansk, Druzhkivka, and Starovarvarivka.

Russian munitions brought down a stairwell of an apartment building in Kharkiv on the evening of 12 October, and rescuers recovered three bodies from the rubble overnight, local authorities reported. Survivors described fire, falling glass, and pets left behind. The strike came days after Washington waived sanctions on Russian diesel, as it expects Kyiv to stop hitting Russian refineries.

Russia hits Ukraine’s cities every day as it readies a winter campaign against Ukrainian infrastructure, and its oil exports keep bringing in the money that pays for the drones and missiles. A halt to Ukraine’s refinery strikes with no matching halt to Russia’s strikes would leave Moscow’s fuel income intact while Kharkiv digs through rubble. Estonia’s prime minister has already urged Europe to help Ukraine destroy those refineries instead.

A stairwell gone in Kholodnohirskyi district

Russian munitions hit Kharkiv’s Kholodnohirskyi district repeatedly from around 21:17, and Mayor Ihor Terekhov preliminarily identified them as Banderols. At 22:21, he said one strike had hit a residential building, possibly trapping people. He then added in a follow-up post: “Very serious destruction—an entire stairwell has collapsed.”

The strike destroyed an entrance of the four-story building, the State Emergency Service (DSNS) said. It counted 11 injured across the city’s evening strikes, and a rescuer was hospitalized, while Terekhov put the number at 10. By 06:56 on 13 October, rescuers had found a third body. Oblast head Oleh Syniehubov confirmed three dead and said the search continued. Experts will check whether the building is still fit to live in, he added.

Over 24 hours, Russian attacks killed three people in Kharkiv and injured 37, including two children treated for acute stress, Syniehubov reported.

“I realize I’m on fire”: two residents recall the strike

Larysa Maksimenko had just put her bedridden husband to sleep when the strike hit, she told Suspilne Kharkiv. She suffered a head wound and burns.

“I went to the kitchen to switch on the kettle for myself, to have some coffee. I realize I’m on fire. Then glass fell on me. I came to, and I’m buried under everything. All covered in blood,” she said.

The window bars were broken, and medics carried her husband out through the window. Rescuers later found a woman under the rubble in her apartment, likely a neighbor, Maksimenko said. All she wants now, she said, is to get to her husband in hospital.

Viacheslav Chibitko, who lives on the second floor next to the collapsed entrance, saw a flash, and then everything blew out. He got his three dogs out, but five cats are still inside. During the clearing, a concrete slab fell on a rescuer, Suspilne’s correspondent reported. Crews pulled him out and handed him to medics.

Kyiv’s toll rises, and strikes hit other cities overnight

The evening drone strike on a 25-story building in Kyiv’s Darnytskyi district killed two people, Kyiv prosecutors reported. The second victim was found dead in a car near the building. Prosecutors counted at least seven injured, including a 17-year-old girl, while Mayor Vitali Klitschko counted 11 in the capital.

From 18:00 on 12 October, Russia launched five ballistic missiles, nine loitering munitions, and 108 attack drones, Ukraine’s Air Force reported. Air defenses downed or suppressed 88 drones. A Russian drone attack injured four patients at a medical facility in Khmelnytskyi Oblast, oblast head Serhii Tiurin said. In Dnipro, a Russian attack injured a 64-year-old man, oblast head Oleksandr Hanzha reported. A downed Russian drone set two houses on fire in Murovane near Lviv, oblast head Maksym Kozytskyi said.

On 12 October, a Russian Smerch rocket with a cluster warhead hit a house in Cherkaske, Donetsk Oblast, killing three people, including a 13-year-old girl, oblast head Vadym Filashkin reported.

Russian attacks killed more than 150 people in the week to 11 October, Ukrainian President Volodymyr Zelenskyy said. Russian bombs killed at least 20 people in Zaporizhzhia on 10 October, by the oblast’s count. On 9 October, the US waived its sanctions on Russian diesel until April 2027. The White House expects Kyiv to halt refinery strikes under its proposed energy ceasefire.

Ukrainian marines planned a clearing operation near Pokrovsk for about a month, their deputy commander said in remarks relayed by Army Inform. The Defense Ministry’s news agency published them on 12 October. He also described the Russian infantry the marines captured as barely trained, hungry, and unwilling to fight.

Russia seized Pokrovsk by seeping small infantry groups into the city a few at a time. Beyond the city, Russian advances stayed limited. ISW assessed on 25 February that the capture brought no further operationally significant gains. Small advances continued, and DeepState mapped one near Bilytske in Donetsk Oblast on 7 October. Every stretch where Ukrainian units stop that infiltration closes the route Russia used to take the city.

What the operation produced

Karyi, the 40th Separate Marine Brigade’s deputy commander, said that Operation Audit cleared about 6 km². The marines suffered no losses while inflicting them on the Russians, he said, and gathered a lot of intelligence. He promised the enemy many more surprises.

The brigade had announced an operation by the same name on 26 September. It said then that the marines had cleared 5 km² and captured two Russian soldiers. The brigade also said they had stopped the flow of Russian infiltration on that stretch of the Pokrovsk direction.

Two weeks of training, then the front

Karyi called the two prisoners typical of the Russian infantry now sent against the marines, with all of two weeks’ training behind them. He said Russian recruits spend a month on transfers and paperwork before going into battle. They then walk to their positions for one or two weeks.

If drones or Ukrainian ground groups don’t kill them first, he said, they surrender because they no longer want to fight. They are not fed or given water. He described one parcel a week with a can of stewed meat, and water drunk from the ground underfoot. That, Karyi said, is why the Russian troops facing the marines are demoralized and untrained.

Ukrainian assault troops suffered more than 10 times fewer casualties than Russian forces during Operation Vivaldi, a Ukrainian military veteran said on 9 October, describing the ratio as unprecedented and highlighting Ukraine’s improved ability to protect its soldiers during offensive operations.

The counteroffensive has been a significant Ukrainian success, reclaiming territory in northern Donetsk Oblast and disrupting Russia’s plans to advance toward Sloviansk and Kramatorsk. The reported casualty ratio points shows Ukraine’s ability to make offensive gains while reducing the human cost of assaulting fortified positions.

Yevhen Dykyi made the remarks in an interview with Radio NV, saying the results showed how Ukrainian forces had learned to limit losses while attacking defended Russian positions.

Protecting troops during offensive operations

Dykyi said the casualty ratio was one of the operation’s most important outcomes.

He said that Ukrainian assault troops suffered more than 10 times fewer casualties than Russian forces during the counteroffensive.

“That speaks volumes. We have learned how to protect our people, and that is extraordinarily vital,” he added.

Operation Vivaldi disrupted Russia’s advance in Donetsk

The Third Army Corps launched Vivaldi in mid-September in northern Donetsk Oblast, near Lyman, where Russian forces had spent months trying to advance toward Ukraine’s fortified cities of Sloviansk and Kramatorsk.

The operation aimed to clear Russian troops from positions north of Lyman and disrupt Moscow’s plans to encircle the remaining Ukrainian-held parts of Donetsk Oblast. Ukraine’s Third Army Corps announced the counteroffensive on 15 September, initially reporting that its forces had cleared Russian infiltrators from several settlements and liberated Serednie.

By 30 September, Ukraine had regained 176 square kilometers of territory during the operation, according to figures cited by the Ukrainian presidential office. Ukrainian authorities also reported that their forces had captured around 250 Russian soldiers and inflicted more than 5,000 Russian casualties, including killed and wounded. 

The counteroffensive also disrupted Russia’s effort to advance behind Ukraine’s fortified defensive line. By threatening Russian positions north of Lyman, Ukrainian forces complicated Moscow’s plans to encircle the Sloviansk-Kramatorsk area rather than attack its defenses head-on.

Unmanned systems help limit casualties

A key feature of Vivaldi has been the use of unmanned systems to attack fortified Russian positions before Ukrainian infantry moves in. Ukrainian forces deployed ground robots carrying grenade launchers to fire into Russian shelters, while explosive ground vehicles were used to destroy bunkers and strongpoints.

In one reported tactic, heavy drones delivered kamikaze ground robots more than 10 kilometers behind Russian lines, allowing Ukrainian operators to attack positions without exposing infantry to direct fire.

Ukrainian forces are advancing east of Sloviansk and Kramatorsk, and even Russian milbloggers now acknowledge it, the Institute for the Study of War (ISW) said on 8 October. The gains may follow months of groundwork like the one that preceded Operation Vivaldi near Lyman, which Ukraine says returned 176 km² to its control. Russian commentators are already doubting that Moscow can reach the two cities.

Russia's years-long push on the Fortress Belt, the chain of cities anchoring Ukraine's defense in Donetsk Oblast, has been stalling since Vivaldi began. Unable to take those cities, Russia keeps hitting them from the air. On 8 October, a Russian bomb killed 30 people on two buses in Kramatorsk.

Across the Siverskyi Donets

Russian milbloggers said Ukrainian forces liberated Ozerne and advanced east of Pyskunivka toward Kryva Luka, ISW reported. They also acknowledged that Ukrainian troops drove Russian forces out of Pyskunivka. Ukrainians are now counterattacking toward Kryva Luka from the west and northwest, from across the river.

ISW called the repeated Russian claims of a river crossing notable, because the Siverskyi Donets is a significant natural obstacle. Kryva Luka is a dominant height just south of the river. From there, Ukraine could launch further counterattacks. Ukrainian forces appear to have pushed Russian troops off both banks in this area, ISW assessed.

The heights Russia wanted

After Vivaldi cleared ground near Lyman in September, Russia shifted its push south toward Mykolaivka and Sloviansk. Russian forces likely see Mykolaivka, just east of Sloviansk, as a primary objective, ISW said. Its heights would favor an offensive on the city. Ukrainian pushes northeast and southeast of the town now deny Russia that terrain.

East of Kramatorsk, milbloggers claimed Ukrainians liberated Malynivka and advanced between Fedorivka Druha and Holubivka. They also reported gains into southern Minkivka and near Fedorivka. The lines remain tangled. Geolocated footage shows Ukrainian forces striking a Russian position in central Tykhonivka after what ISW assesses was a Russian infiltration.

ISW said the counterattacks may point to a broader Ukrainian goal: pushing Russian forces east, away from the Sloviansk–Kramatorsk area and toward the Siverskyi Donets–Donbas Canal.

The Vivaldi playbook

The counterattacks have run for weeks. On 29 September, Ukrainian military observer Kostiantyn Mashovets reported them in the same areas, saying Russia's 3rd Combined Arms Army had failed to make significant gains. ISW assesses that the attacks build on months of shaping meant to wear down Russia's offensive capacity.

Before Vivaldi, Ukrainian forces targeted Russian drone operators, gaining drone superiority before the counteroffensive. They used the same approach ahead of their Oleksandrivka counterattacks in early 2026.

Moscow appears to see the pattern. A Ukrainian military official said on 7 October that Russia is moving drone units and Spetsnaz from quieter sectors to the Sloviansk–Kramatorsk direction. Ukraine also reorganized its command in and around Donetsk Oblast in early September, which may be blunting Russian attacks from the east, ISW said.

"Distant" and "doomed"

One Russian milblogger called an advance toward the Sloviansk–Kramatorsk area a "distant" prospect, ISW reported. A Russian offensive from Siversk toward Sloviansk may be "doomed" to failure or heavy losses unless Russia retakes the forests south of Lyman, he said.

The counterattacks east of the two cities appear to support Vivaldi, ISW assessed. Together with Russia's defeat north of the river, they could disrupt Russia's offensive toward Sloviansk from the east entirely.

If Ukraine holds Kryva Luka and keeps Russia off the Mykolaivka heights, Moscow's pincer on Sloviansk and Kramatorsk loses the ground it was built on.

Russian forces struck the eastern Ukrainian city of Kramatorsk on the morning of 8 October, hitting two route buses carrying residents and killing dozens of civilians. The Donetsk Oblast prosecutor's office opened a war-crimes investigation.

Russia has turned everyday movement in frontline Donetsk Oblast into a lethal risk, striking city buses, ambulances, and cars in places its army has not been able to capture.

A route bus run turned deadly

The attack came at around 10:00, catching two route buses in the impact zone. The prosecutor's office said the attackers likely used a UMPB D-30SN. HUR, Ukraine's military intelligence, describes it as a guided glide bomb that can fly up to 100 km when released from an altitude of 12–15 km and carries a warhead equal to a FAB-250 aerial bomb.

30 people were killed and 18 injured after a Russian bomb hit two passenger buses carrying civilians in Kramatorsk, Donetsk Oblast.

The buses caught fire, and the force of the attack also damaged nearby homes and cars. Some victims were so badly burned that police had to recover… pic.twitter.com/FqLdM0HN1B

— Euromaidan Press (@EuromaidanPress) October 8, 2026

The toll rose through the day, from 12 dead in the first reports to 30 killed and 20 wounded by 14:55, Donetsk Oblast head Vadym Filashkin said. Across Donetsk Oblast, Russian attacks killed 33 people that day, including the 30 in Kramatorsk and three in nearby Bilenke, the State Emergency Service said. Ukrainian President Volodymyr Zelenskyy said the strike would not go unanswered.

Buses pulled off the roads

Filashkin ordered the Kramatorsk and Sloviansk city military administrations to suspend public transport, citing the sharp deterioration in security. Buses had become an attractive target for Russian forces, he said, and the authorities could not risk the lives of passengers and drivers. He also urged everyone still in Donetsk Oblast to leave for safer parts of Ukraine. Kramatorsk is a frequent target of Russian attacks. Russia had not commented on the strike as of publication.

The city has been under daily fire. On 5 October, Russian FPV drones hit ambulances and an apartment block in Kramatorsk, killing a woman and wounding four, the prosecutor's office reported. Over the previous day, Russian forces shelled Donetsk Oblast settlements 31 times and 256 people left the front line, Filashkin said.

Ukraine's 413th Separate Raid Regiment of the Unmanned Systems Forces struck the Snizhne Machine-Building Plant in occupied Donetsk Oblast in September, working with other Defense Forces units, the regiment posted on 6 October, sharing a video of the strike. The General Staff reported the strike on the plant on 11 September, saying that the extent of the damage was being clarified.

The strike adds to Ukraine's campaign of long-range attacks on Russian military targets as Russia has begun its winter campaign of strikes against Ukraine's energy infrastructure. Hitting the suppliers of aircraft parts goes after Russia's ability to keep its attack jets and helicopters flying.

The regiment said the plant works for Russia's military industry, producing engine components for attack aircraft and combat helicopters.

A former Motor Sich plant in occupied Snizhne

The Snizhne plant was a separate division of Motor Sich, a Ukrainian aircraft-engine maker based in Zaporizhzhia, a city that remains under Ukrainian control. Snizhne has been under Russian occupation since 2014. The plant specializes in producing parts for gas-turbine engines, including compressor and turbine discs and blades, the General Staff said. It never built whole engines. In September 2014, months into the occupation, it was machining blanks from Motor Sich's Zaporizhzhia plant into turbine blades and was one of only two plants in the former Soviet Union making such blades for helicopters, a plant worker said.

Motor Sich said in December 2017 that it had lost control of the plant. Weeks later, Viacheslav Bohuslaiev, then Motor Sich's honorary president and a member of parliament, told RFE/RL's Donbas.Realii that Motor Sich still owned the plant and had handed its management to a foreign company, while keeping it under the company's "full control."

In February 2023, Ukraine's Prosecutor General's Office served Bohuslaiev a notice of suspicion of aiding a terrorist organization, alleging that Motor Sich shipped blanks to the Snizhne plant and received finished engine parts through foreign-registered companies. The case went to court in October 2023, and Bohuslaiev, who denies the charges, has been in pretrial detention since October 2022 as the trial continues.

Snizhne, which Russia uses as a rear base, has been hit before. In May, Ukraine's Unmanned Systems Forces and the Security Service of Ukraine struck a Russian training center for drone pilots in the city, and in September, a strike on energy infrastructure cut power across Snizhne.