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● LIVE Updated 2h ago · 12 sources tracked

A Quiet Ukrainian Counteroffensive, A 'Rout' For Russian Forces

Ukraine has initiated a counteroffensive titled Operation Vivaldi, focusing on the north of the Donetsk region near Lyman. The offensive has cleared 75 square kilometers in its initial phase, resulting in a frontline breakthrough and the encirclement of Russian forces in the Donbas. Ukrainian commanders report significant territorial gains and a rout of Russian positions. Meanwhile, Russia responded on September 17 with renewed missile and drone strikes against Kyiv, Odesa, and other cities following the passage of a US sanctions package targeting Moscow.

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⚡ Key Developments & Real-Time Context
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  • ✓ Ukraine launched a counteroffensive in the north of the Donetsk region near Lyman.
  • ✓ Operation Vivaldi has cleared 75 square kilometers of territory.
  • ✓ Russia conducted missile and drone attacks on Kyiv and Odesa on September 17.
  • ✓ The US Congress passed a sanctions package targeting Moscow and its financial supporters.
🛡️ Source Corroboration: 12 independent reporting domains (85% confidence) ⏱ Read time: ~2 min

What changed

Ukraine revealed the name Operation Vivaldi and reported the seizure of 75 square kilometers of territory.

Live updates

  1. Ukraine Launches Operation Vivaldi Counteroffensive in Donetsk Region

    Ukraine has initiated a counteroffensive titled Operation Vivaldi, focusing on the north of the Donetsk region near Lyman. The offensive has cleared 75 square kilometers in its initial phase, resulting in a frontline breakthrough and the encirclement of Russian forces in the Donbas. Ukrainian commanders report significant territorial gains and a rout of Russian positions. Meanwhile, Russia responded on September 17 with renewed missile and drone strikes against Kyiv, Odesa, and other cities following the passage of a US sanctions package targeting Moscow.

    Why it matters

    This offensive follows months of static clashes and represents a shift in Ukrainian tactical momentum. The operation aims to reclaim strategic ground in the Donbas while Russian forces face logistical and personnel collapses. The timing coincides with increased US legislative pressure on Moscow via new sanctions.

    What is confirmed

    • Ukraine launched a counteroffensive in the north of the Donetsk region near Lyman.
    • Operation Vivaldi has cleared 75 square kilometers of territory.
    • Russia conducted missile and drone attacks on Kyiv and Odesa on September 17.
    • The US Congress passed a sanctions package targeting Moscow and its financial supporters.

    Still unconfirmed

    • Russian forces in the Donbas are fully surrounded.
    • The Ukrainian breakthrough has caused a rout of Russian forces.

    What to watch next

    • Confirmation of further territorial gains beyond the initial 75 square kilometers.
    • Russian military response to the breakthrough near Lyman.
    • Impact of the new US sanctions package on Russian war financing.
    Sources used for this update (15)
    1. Institute for the Study of War — Russian Offensive Campaign Assessment, September 9, 2026
    2. Institute for the Study of War — Russian Offensive Campaign Assessment, September 12, 2026
    3. The Daily Beast — Vladimir Putin’s Battlefield Boasts Collapse in Humiliating Fashion
    4. Kyiv Post — ‘Fully Surrounded’: Russian Forces Suffer Major Defeat in Donbas
    5. Newsweek — Map Shows Major Ukrainian Frontline Breakthrough After Months of Clashes
    6. Українська правда — 3rd Army Corps commander confirms Ukrainian offensive near Lyman, promises good news
    7. UNITED24 Media — Ukraine Launches Operation Vivaldi, Clears 75 Square Kilometers in Its “First Season”
    8. Reuters — Ukraine launches offensive push in north of Donetsk region, senior commander says
    9. Radio Free Europe/Radio Liberty — A Quiet Ukrainian Counteroffensive, A 'Rout' For Russian Forces
    10. Critical Threats — Russian Offensive Campaign Assessment, September 14, 2026
    11. Institute for the Study of War — Russian Offensive Campaign Assessment, September 15, 2026
    12. The Kyiv Independent — Analysis: Through the fog of war, Ukraine reveals 'Operation Vivaldi' counterattack near Lyman
    confidence 85%
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