Data from ISW for the period of May 12–19, 2026 indicates that Russia has lost a total of 29 square miles of Ukrainian land — marking the second week in a row of net losses after a 12-square-mile decline the previous week. Russia Matters highlights that since May 2025, Russia has seen a total net gain of 1,585 square miles, which is a significantly slower pace compared to earlier stages of the conflict. This downturn coincides with Ukraine's campaign to disrupt Russian logistics and supply lines, while Russian casualty rates have reached unprecedented monthly highs.
