Vivaldi erased Russia’s Lyman pincer. Now Moscow is pushing toward Sloviansk instead
Ukrainian forces forced Russian troops backward north of Lyman during a four-month covert counteroffensive. The Third Army Corps directed Operation Vivaldi starting in May 2026 to reinforce defensive lines in the Lyman and Sviatohirsk sectors. Officials report the offensive eliminated a Russian division and reclaimed 277 square kilometres of territory. These actions disrupted Moscow plans to encircle Slovyansk and Kramatorsk. Despite these tactical gains, military analysts and intelligence groups warn that the danger to the urban agglomeration persists as Russian forces redirect their push.
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- ✓ Ukraine's Third Army Corps launched the secret counteroffensive known as Operation Vivaldi in May 2026.
- ✓ The four-month offensive liberated 277 square kilometres and eliminated a Russian division.
- ✓ Operation Vivaldi pushed back Russian forces around Kramatorsk, Sloviansk, and north of Lyman.
- ✓ The Institute for the Study of War found no evidence that Russia had secured Dobropillia.
What changed
Intelligence assessments confirm that despite the success of Operation Vivaldi north of Lyman, the overarching threat to the Sloviansk and Kramatorsk urban area persists.
Live updates
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Ukraine Blunts Russian Encirclement Attempt
Ukrainian forces forced Russian troops backward north of Lyman during a four-month covert counteroffensive. The Third Army Corps directed Operation Vivaldi starting in May 2026 to reinforce defensive lines in the Lyman and Sviatohirsk sectors. Officials report the offensive eliminated a Russian division and reclaimed 277 square kilometres of territory. These actions disrupted Moscow plans to encircle Slovyansk and Kramatorsk. Despite these tactical gains, military analysts and intelligence groups warn that the danger to the urban agglomeration persists as Russian forces redirect their push.
Why it matters
Operation Vivaldi shifted momentum across the front line and allowed Ukrainian forces to seize the operational initiative. Moscow previously sought to envelop the strategic fortress cities of Slovyansk and Kramatorsk from the Lyman pincer. Even with the elimination of a Russian division and the liberation of significant northern territory, the threat to the region remains active.
What is confirmed
- Ukraine's Third Army Corps launched the secret counteroffensive known as Operation Vivaldi in May 2026.
- The four-month offensive liberated 277 square kilometres and eliminated a Russian division.
- Operation Vivaldi pushed back Russian forces around Kramatorsk, Sloviansk, and north of Lyman.
- The Institute for the Study of War found no evidence that Russia had secured Dobropillia.
What to watch next
- Frontline movements near the Sloviansk and Kramatorsk urban agglomeration
- Further updates from the Institute for the Study of War regarding Dobropillia
confidence 100%Sources used for this update (7)
- app-vivaldi.com — Download Vivaldi Choose a Version for Your Device
- en.h.ua — Ukraine says “Vivaldi” operation disrupted Russian plans near ...
- www.yahoo.com — How Ukraine’s Operation Vivaldi pushed back Russian ... - Yahoo
- kyivindependent.com — How Ukraine’s Operation Vivaldi pushed back Russian forces in ...
- ua.news — The threat to Sloviansk and Kramatorsk persists despite the ...
- prompolit.info — Threat persists for Sloviansk and Kramatorsk agglomeration
- www.ukrinform.net — Threat to Sloviansk-Kramatorsk agglomeration persists despite ...
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Ukraine ends Operation Vivaldi after destroying Russian division
Andriy Biletsky, commander of the Third Army Corps, announced the conclusion of Operation Vivaldi. The four-month covert offensive liberated 277 square kilometres and eliminated a Russian division. This action disrupted Moscow's strategy to encircle the fortress cities of Slovyansk and Kramatorsk. These gains, alongside other 2026 counter-operations, have allowed Ukraine to seize the operational initiative across the entire front line and halt the Russian army's progress in the region.
Why it matters
Russia intended to capture Slovyansk and Kramatorsk using a pincer movement attacking from two directions. Operation Vivaldi targeted the northern arm of this movement near Lyman to prevent the envelopment of these eastern cities.
What is confirmed
- Operation Vivaldi was a four-month covert offensive.
- The operation liberated 277 square kilometres of territory.
- Ukrainian forces destroyed a Russian division during the operation.
- The offensive disrupted Russian plans to encircle Slovyansk and Kramatorsk.
- Ukraine has seized the operational initiative along the entire front line.
What to watch next
- Russian military adjustments to the Slovyansk and Kramatorsk axis
- Further Ukrainian advances following the seizure of operational initiative
confidence 100%Sources used for this update (4)
- newsukraine.rbc.ua — Operation Vivaldi - Ukraine defeats Russia’s 144th Motor ...
- www.yahoo.com — How Ukraine outmaneuvered Russian troops in Operation Vivaldi
- en.h.ua — Ukraine's "Operation Vivaldi" halted Russia's Donetsk plan ...
- www.dagens.com — Operation Vivaldi: Russian division ‘ceased to exist as an ...
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Ukraine Stalls Russian Donbas Pushing With Operation Vivaldi
Ukraine has derailed Moscow's offensive plans in the Donetsk region through a five-month counteroffensive codenamed Operation Vivaldi. The military operation near Lyman restored hundreds of square kilometres and multiple settlements, collapsing the northern arm of a Russian pincer movement. While Russia continues drone and missile attacks on population centers and shifts its pressure toward Sloviansk and Kramatorsk, the Ukrainian success demonstrates an ability to manoeuvre effectively across a drone-filled battlefield. Analysts report that the counteroffensive is producing a cascading effect that complicates wider Russian envelopment plans across the Donbas.
Why it matters
Russia initially sought to surround Ukrainian-held Donetsk by utilizing a pincer movement before the counteroffensive near Lyman disrupted those objectives. Ukraine publicly confirmed the operation in mid-September. The United States think tank credits the campaign with dismantling the 2026 push to seize the region, forcing Russian units onto the defensive.
What is confirmed
- Ukraine publicly confirmed it mounted a counteroffensive near Lyman, Donetsk, in mid-September.
- A five-month counteroffensive codenamed Operation Vivaldi dismantled Moscow's offensive plans to seize the Donetsk region.
- Operation Vivaldi has restored 277 square kilometres and 16 settlements, complicating a northern envelopment plan.
- Russian forces are pressing toward Sloviansk and Kramatorsk.
Still unconfirmed
- The Third Army Corps reports the liberation of three more settlements.
What to watch next
- Developments in Russian advances toward Borova and Kupiansk-Vuzlovyi
- Further updates on Russian military movements toward Sloviansk and Kramatorsk
confidence 100%Sources used for this update (7)
- theconversation.com — Operation Vivaldi: success of Ukraine’s counteroffensive shows it has learned to manoeuvre on a drone‑filled battlefield
- www.newsweek.com — Ukraine claims major battlefield gains in "Operation Vivaldi"
- asiatimes.com — Operation Vivaldi: Ukrainian gain on a drone-filled battlefield
- www.youtube.com — The Best of Vivaldi - YouTube
- www.dagens.com — Ukraine has defeated Putin’s 2026 campaign to seize Donetsk ...
- en.lb.ua — Who Is Vivaldi Playing For? What Is Holding Back Russia’s Donbas Offensive
- en.h.ua — ISW: Operation Vivaldi producing "cascading effect" across ...
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Ukraine's Operation Vivaldi foils Russia's Donbas encirclement plan
Ukraine's counter-offensive on the Lyman axis has collapsed the northern arm of Russia's pincer movement aimed at surrounding Ukrainian-held Donetsk, liberating up to 176 square kilometres and forcing Russian units onto the defensive. Russia is now pushing toward Sloviansk instead of completing the halted encirclement. The offensive has derailed the immediate threat to the area despite ongoing military and civilian casualties.
Why it matters
The development is significant as it thwarts Russia's strategic plan to encircle and capture Donetsk, a key city in the Donbas region. Ukraine's military actions have been crucial in defending the region against Russian aggression. The situation remains fluid with ongoing military operations and potential for further escalation.
What is confirmed
- Ukraine's counter-offensive on the Lyman axis collapsed the northern arm of a Russian pincer movement aimed at surrounding Ukrainian-held Donetsk, liberating up to 176 square kilometres and forcing Russian units onto the defensive.
- Russia is now actively pushing toward Sloviansk instead of completing the halted encirclement.
What to watch next
- Further Ukrainian military actions against Russian forces in the Donbas region
- Russia's continued push toward Sloviansk and potential Ukrainian responses
- Ongoing military and civilian casualties in the region
confidence 95%Sources used for this update (2)
- www.euronews.com — Ukraine’s Operation Vivaldi foils Russia’s plan to encircle the Donbas, ISW analysis shows | Euronews
- europeanpulse.com — Ukraine's Operation Vivaldi breaks Russian encirclement in ...
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Ukraine Blunts Russian Pincer as Moscow Shifts Focus to Sloviansk
Ukrainian forces forced Russian troops to retreat from several settlements in the Donetsk region that Moscow previously held firmly. Operation Vivaldi collapsed the northern arm of a Russian pincer movement designed to surround Ukrainian-held Donetsk, liberating up to 176 square kilometres on the Lyman axis. While Russia fights to retain ground it once controlled, Moscow is now actively pushing toward Sloviansk instead of completing the halted encirclement. The offensive has successfully derailed the immediate threat to the area despite ongoing military and civilian casualties.
Why it matters
Operation Vivaldi represents a major counter-offensive by Ukrainian forces on the Lyman axis, directly countering the northern arm of Moscow's regional advance. The failure of the initial Russian pincer movement forces Moscow to adjust its operational strategy in the Donetsk sector by targeting Sloviansk directly. This dynamic follows months of heavy fighting over settlements that Russia previously held with strong confidence.
What is confirmed
- Ukraine's counter-offensive on the Lyman axis collapsed the northern arm of a Russian pincer movement aimed at surrounding Ukrainian-held Donetsk.
- Russia has retreated from many settlements in Donetsk that it once firmly held and is now fighting for them.
Still unconfirmed
- Four new Ukrainian frontline breakthroughs are shown on updated maps.
What to watch next
- Further mapping data confirming the extent of Ukrainian frontline breakthroughs
- Russian troop movements and assaults directed toward Sloviansk
- Official casualty reports and military updates from the Donetsk sector
confidence 100%Sources used for this update (3)
- www.newsweek.com — Map reveals four new Ukrainian frontline breakthroughs - Newsweek
- www.aljazeera.com — Ukraine pushes Russia back in Donetsk as military, civilian ...
- uk.news.yahoo.com — Ukraine’s Operation Vivaldi foils Russia’s plan to encircle ...
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Ukraine Operation Vivaldi Pushes Back Russian Forces Near Lyman
Ukrainian forces have recaptured up to 250 square kilometres near Lyman during Operation Vivaldi, derailing a major Russian thrust and blocking the encirclement of Sloviansk and Kramatorsk. Despite manpower disadvantages, Ukraine launched one of its biggest offensives of the year after spending months hitting supply lines. Unconventional tactics, including armed ground robots and converted Soviet BTR-60 armored personnel carriers, helped break through initial enemy defenses. The offensive coincided with negotiations mediated by Donald Trump, prompting public relations campaigns from both sides.
Why it matters
The fighting around Donetsk Oblast carries decisive importance for the course of the war as Russian forces attempt to push toward the Kramatorsk-Sloviansk urban area. Finnish battlefield analysts note that Russia recorded its worst month for net territorial gains since June 2023 due to these disruptions. The battlefield operations coincide with mediated negotiations, which have fueled competing public claims from military commands.
What is confirmed
- Ukraine's Operation Vivaldi counteroffensive near Lyman has recaptured up to 250 square kilometres from Russia.
- Finnish battlefield analysts reported that Russia recorded its worst month for net territorial gains since June 2023.
- The Russian army is attempting to break through to the Kramatorsk-Sloviansk urban area from different directions.
Still unconfirmed
- Ukrainian military officials claim they have already moved on to the third phase of Operation Vivaldi near the city of Lyman in the Donetsk region.
What to watch next
- Progression or stalling of Ukraine's third phase of Operation Vivaldi around Lyman
- Shifts in Russian offensive momentum toward the Kramatorsk-Sloviansk urban area
- Impact of Donald Trump-mediated negotiations on military positioning and public campaigns
confidence 90%Sources used for this update (7)
- www.military-stuff.org — Operation Vivaldi: How Ukraine’s Latest Counteroffensive ...
- meduza.io — Ukraine touts gains from Operation Vivaldi as Russia claims ...
- inews.co.uk — Ukraine's secret operation is making Russia nervous - and reversing Putin's gains
- www.kyivpost.com — Ukraine’s Vivaldi Counteroffensive Derails Russia’s Donbas ...
- russiaanalyzed.substack.com — Inside Operation Vivaldi: How Ukraine Outmaneuvered Russian ...
- www.europesays.com — Ukraine’s Operation Vivaldi Disrupts Russian Plans For ...
- nationalsecurityjournal.org — Putin Can't Hide this Fact: The Russian Military Is Now ...
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Moscow pivots toward Sloviansk following Vivaldi setbacks
Moscow forces are redirecting their offensive efforts toward Sloviansk after Ukrainian counteroperations shattered the northern pincer around Lyman. Ukraine previously dismantled Russian supply lines and northern offensive plans through Operation Vivaldi, utilizing unconventional tactics like remotely controlled ground-attack vehicles made from converted Soviet BTR-60 armored personnel carriers. The Institute for the Study of War reported that these actions disrupted attempts to envelop the fortified defensive belt from Lyman and Dobropillia. These disruptions now complicate ongoing enemy movements against the northern section of the Ukrainian defensive line.
Why it matters
The recent battlefield shifts alter Moscow's operational momentum in the region. Ukrainian forces previously checked the northern offensive by severing vital supply lines and deploying innovative remote attack methods against fortifications. This forced a strategic reorientation toward Sloviansk.
What to watch next
- Further updates on Russian military movements toward Sloviansk
- Reports from the Institute for the Study of War on the northern defensive line
confidence 50%Sources used for this update (7)
- vivaldi.com — Download Vivaldi - Vivaldi Browser
- en.wikipedia.org — Antonio Vivaldi - Wikipedia
- vivaldi.com — Vivaldi Browser | Powerful, Personal and Private web browser
- en.wikipedia.org — Vivaldi (web browser) - Wikipedia
- www.youtube.com — The best of Vivaldi: The Most Famous Classical Music Pieces of...
- help.vivaldi.com — Download and Install Vivaldi on desktop - Vivaldi Browser Help
- vivaldi.com — Vivaldi Browser on Desktop | Available on Windows, macOS, and...
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Operation Vivaldi Disrupts Russian Advance Toward Sloviansk
Ukraine has shattered Russia's northern offensive around Lyman through Operation Vivaldi by cutting vital supply routes. According to the Institute for the Study of War, these Ukrainian counteractions disrupted Russian plans to envelop the fortified defensive belt from Lyman and Dobropillia. The counteroffensive operations may complicate ongoing Russian efforts to push toward Sloviansk and advance against the northern section of the Ukrainian defensive line. Ukrainian forces utilized unconventional tactics during the offensive, deploying converted Soviet BTR-60 armored personnel carriers as remotely controlled ground-attack vehicles to demolish Russian fortifications.
Why it matters
The battlefield situation in northern Donetsk remains fluid as Moscow redirects its strategic pressures toward Sloviansk following the collapse of the Lyman pincer. Ukrainian commanders rely on tech-driven operational adaptations, such as automated ground systems, to counter entrenched Russian positions. Military analysts continue to evaluate the long-term viability of the Russian push against the Ukrainian fortress belt.
What is confirmed
- Ukraine's Operation Vivaldi shattered Russia's northern offensive around Lyman by severing key logistics lines.
- Ukrainian actions in the Lyman sector affected the Russian plan to envelop the Ukrainian fortified belt from the direction of Lyman and Dobropillia.
- The operation may complicate further Russian attempts to advance on the northern part of this defensive area and Sloviansk.
- Soviet BTR-60 APCs were converted into remotely controlled ground-attack systems and employed to destroy Russian fortifications during the operation.
Still unconfirmed
- Russian military bloggers are openly discussing how the Vivaldi operation threatens to thwart broader offensive plans near Sloviansk.
What to watch next
- Visual confirmation of Russian force redeployments away from the Sloviansk axis.
- Official assessments regarding the operational status of remotely controlled BTR-60 systems in subsequent engagements.
confidence 95%Sources used for this update (3)
- jasonjaysmart.substack.com — How Ukraine Froze the Russian War Machine
- korabelov.info — Operation "Vivaldi" near Lyman may complicate Russia's ...
- ua.news — Ukraine's "Vivaldi" Operation Could Thwart Russia's Plans ...
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Ukraine Shatters Russian Pincer North of Lyman in Operation Vivaldi
Ukrainian forces have eliminated the northern jaw of Russia's Lyman pincer through Operation Vivaldi, recapturing territory in northern Donetsk. The counteroffensive, spearheaded by advanced tech deployments, pushed Russian troops back to 2022 lines. Kyiv's forces captured 250 Russian troops and killed 5,000 soldiers during the operation, according to reported metrics. While Ukraine successfully prevents the encirclement of its fortress belt and damages oil infrastructure, Moscow continues its push toward Sloviansk and seeks to encircle multiple Ukrainian cities.
Why it matters
Operation Vivaldi utilized ground robots to clear routes and lay minefields over a brief window, achieving objectives in 48 hours that traditionally required two weeks. This tech-heavy counteroffensive fundamentally alters the operational dynamics in northern Donetsk by eliminating the immediate threat of a Russian pincer movement. Moscow nevertheless maintains offensive pressure toward Sloviansk despite losing its northern gains.
What is confirmed
- Ukraine retook 176 square kilometers of territory during Operation Vivaldi.
- Kyiv captured 250 Russian troops and killed 5,000 soldiers.
Still unconfirmed
- A mutiny occurred within the Russian command structure during the operation.
- The Third Army Corps claims to have recovered 125 square kilometers.
What to watch next
- Visual confirmation of Russian forces consolidating defensive lines near Sloviansk
- Official reports detailing the scale of the alleged command mutiny within Russian ranks
- Further deployment data regarding kamikaze ground robots in ongoing Donetsk engagements
confidence 90%Sources used for this update (4)
- www.forcesnews.com — Ukraine's Operation Vivaldi breaks the northern jaw of Russia ...
- www.europesays.com — Ukraine’s Operation Vivaldi breaks the northern jaw of Russia ...
- milscopex.com — Russia’s Northern Pincer Movement Shattered: Putin’s Victory ...
- derechadiario.com.ar — Operation Vivaldi: Ukraine launched a drone-led ...
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Ukraine Recaptures 176 Square Kilometers in Donetsk
Ukrainian forces recaptured 176 square kilometers in northern Donetsk through Operation Vivaldi, pushing Russian troops back to their 2022 lines. The tech-heavy operation utilized ground robots to clear 30 kilometers of routes and lay 400 meters of minefields over two nights without human losses. This robotic deployment achieved objectives in 48 hours that traditionally required two weeks. While Ukraine successfully prevents the encirclement of its fortress belt and cripples refineries deep in Samara, Moscow continues pushing toward Sloviansk and seeks to encircle several Ukrainian cities.
Why it matters
Operation Vivaldi demonstrates how advanced technology and autonomous systems can alter front-line combat dynamics against larger forces. By eliminating the Russian Lyman pincer and threatening broader logistics, Kyiv disrupted Moscow's regional strategy. President Vladimir Putin maintains demands for the handover of the Donbas region as Russian forces attempt to advance.
What is confirmed
- Kyiv's operation Vivaldi recaptured 176 square kilometers in northern Donetsk.
- Operation Vivaldi drove Russian forces back to their 2022 lines.
Still unconfirmed
- Refineries deep in Samara were crippled during the operation.
What to watch next
- Developments in the Russian push toward Sloviansk
- Further updates on Ukraine's advance across frontline sectors
- Evidence of broader impacts on Russian war-wage capabilities from deep strikes
confidence 95%Sources used for this update (3)
- euobserver.com — First blind the Russians, then catch them with robots ...
- www.dagens.com — Operation Vivaldi: Ground robots clear 30 kilometers of ...
- www.ibtimes.com — Russia Is Seeking To Encircle Several Ukrainian Cities ...
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Ukraine Erases Russia Lyman Pincer in Operation Vivaldi
Ukrainian forces dismantled Russia's Lyman pincer through Operation Vivaldi, forcing Moscow to pivot its push toward Sloviansk instead. During the operation, Ukrainian forces utilized ground robots to lay 400 meters of minefields and clear 30 kilometers across two nights without suffering losses. According to a Ukrainian corps, the robotic deployment accomplished tasks in two nights that would have traditionally taken human troops two weeks. While Ukraine advances across four frontline sectors, Russia claims gains near key Donetsk cities as Putin demands the handover of the Donbas region.
Why it matters
Operation Vivaldi marks a tactical shift in frontline logistics by integrating ground robots for rapid mine-laying and clearance behind enemy lines. This mechanized deployment prevented human casualties during high-risk engineering tasks while neutralizing the Russian tactical pincer aimed at Lyman. Moscow has consequently redirected its offensive pressure toward Sloviansk as fighting intensifies across multiple Donetsk sectors.
What is confirmed
- Ukrainian forces erased Russia's Lyman pincer during Operation Vivaldi.
- Moscow is now pushing toward Sloviansk instead.
- Ukrainian forces used ground robots to lay 400 meters of minefields in two nights.
- Ground robots cleared 30 kilometers in two nights without losses.
Still unconfirmed
- Russia is claiming gains near key Donetsk cities.
What to watch next
- Further tactical movements around Sloviansk as Russian forces adjust their offensive direction.
- Additional reports on the battlefield deployment and scaling of ground robotics by Ukrainian forces.
confidence 100%Sources used for this update (10)
- Institute for the Study of War — Russian Offensive Campaign Assessment, September 17, 2026
- UNITED24 Media — Putin Wants Ukraine to Hand Over the Donbas. Now Russia Is Losing Ground There Instead
- Business Insider — Drones Drop Robots Behind Russian Lines in Ukraine to Retake Territory
- Euromaidan Press — Vivaldi erased Russia’s Lyman pincer. Now Moscow is pushing toward Sloviansk instead
- Ukrinform — Operation Vivaldi: Ukrainian forces use ground robots to lay 400 m of minefields in two nights
- united24media.com — Operation Vivaldi: Ground Robots Cleared 30 Kilometers in Two Nights Without Losses
- Yahoo — Drones took 2 nights to lay a minefield that would have taken troops 2 weeks: Ukrainian corps
- Kyiv Post — Ukraine Advances in 4 Frontline Sectors as Russia Claims Gains Near Key Donetsk Cities, ISW Says
- Modern War Institute - — An Overture to Victory: Operation Vivaldi and Ukraine’s Path to Battlefield Decision
- Ars Technica — Robots make combat airdrops, clear mines as Ukraine defeats Russian pincer
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