Ukraine launches discreet offensive in Donbas, surprising Russia

Ukraine orchestrates an offensive codenamed Operation Vivaldi in the Donbas region.

Published 2h5 sources✓ ConfirmedMajorupdated 1h

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The fact

This advance, conducted under Russia's radar, has caught military observers off guard.

Details remain confidential, but initial successes are described as an 'embarrassment' for Moscow.

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Sep 25Ukraine launches discreet offensive in Donbas, surprising Russiathis article

Auto-synthesis from 5 media sources · identified on September 25, 2026