Russian Losses in Ukraine Now Outpace Gains: ISW Reports a Sharp Decline in Offensive Momentum.

Shifts in Territorial Control Between Ukraine and Russia

According to Espreso.tv: A June 1, 2026 report from the Institute for the Study of War (ISW) reveals significant changes in the territorial dynamics of the conflict between Ukrainian and Russian forces. Over the six-month period from December 2025 to May 2026, Russian troops captured or infiltrated just 40.64 square kilometers of Ukrainian territory—a dramatic drop compared to the previous year.

During the same timeframe, Russian forces lost control over 281.1 square kilometers of Ukrainian land. To put this in perspective, in the equivalent period one year earlier, Russia had managed to advance by more than 515 square kilometers. These figures underscore a major shift in frontline combat dynamics.

Trends and the Role of External Factors

Notably, May 2026 marked the smallest territorial gains for Russian forces since October 2023. This trend may point to evolving tactics on both sides and the growing influence of external factors on the course of hostilities.

The observed changes in frontline territorial control could reflect how both sides are adapting to new conditions, as well as potential shifts in the external support each party receives. The slowdown in Russian advances may signal stronger resistance from Ukrainian forces or adjustments in military strategies employed by both sides. These developments carry significant implications for the future trajectory of the conflict and for broader international policy considerations.