2025 Sumy offensive
| 2025 Sumy offensive | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Part of northern Ukraine border skirmishes | |||||||||
Map of Sumy oblast as of 26 June 2025 | |||||||||
| |||||||||
| Belligerents | |||||||||
| Russia | Ukraine | ||||||||
| Units involved | |||||||||
|
| ||||||||
| Strength | |||||||||
|
Per Wall Street Journal: 50,000 |
Per Wall Street Journal: ~16,600 | ||||||||
| Casualties and losses | |||||||||
|
Ukrainian claim: 300–400 casualties per day |
Russian claim: 255 casualties 4 combat vehicles 14 vehicles 3 field guns | ||||||||
| 56,000 residents evacuated, and 2 injured | |||||||||
In February 2025, Russian forces launched a cross-border offensive from Russia into Ukraine's adjacent Sumy Oblast. The operation succeeded Russia's efforts to regain control of Kursk Oblast, following Ukraine's Kursk campaign in 2024. Russia entered the Sumy region near the villages of Novenke and Basivka. By the end of February, Ukraine's Center for Combatting Disinformation acknowledged the presence of Russian forces, while DeepState described Basivka and Novenke as "gray zones."