Russia could assemble a strike force for an offensive into northern Ukraine by February 2027 if Moscow launches another mobilization, Ukrainian military intelligence's (HUR) deputy chief Major General Vadym Skibitskyi told RBC-Ukraine on 18 August.

Skibitskyi said another mobilization could follow Russia’s September parliamentary elections. Depending on its scale, that call-up could produce a strike force by February 2027. Skibitskyi based the February estimate on Russia’s 2022 mobilization. He said some personnel reached the front in December 2022, while combat-ready units arrived in January 2023.

Earlier warnings identified a northern route

The February estimate follows Ukrainian warnings about possible attacks across the northern border. In May, Zelenskyy said Ukraine was tracking five scenarios for expanding the war through the north, including an advance through Chernihiv Oblast toward Kyiv.

Syrskyi called an attack from Russia’s Bryansk Oblast into Chernihiv Oblast Moscow’s most realistic northern option, ranking it above an operation through Belarus. Its purpose, he said, would be to draw Ukrainian forces away from the east and south.

Russia has also struggled to prepare other major campaigns as Ukraine targeted the forces and systems needed to carry them out. ISW assessed that Ukrainian drones likely disrupted preparations for a spring–summer offensive in Donetsk Oblast, while a planned Russian naval-drone campaign reportedly stalled after Starlink access was blocked.

Ukrainian intelligence says Russia lacks the manpower

Skibitskyi said Moscow cannot form the units required for a new offensive without mobilization. HUR estimates Russia lost more personnel than it recruited in both June and July. The shortfall reached 3,000 in June and at least 1,000 in July, meaning monthly contracts no longer replaced battlefield losses.

The agency says Russia’s operational reserve is about one-tenth the size of its combat component against Ukraine. Moscow also lacks enough personnel to expand brigades into divisions, while recruitment for its unmanned-systems forces has reached only 30% of its quota.

CSIS estimated in January that Russia had suffered losses unmatched by any major state since World War II while advancing extremely slowly.