Ukraine: Calibration Assessment Round 4 (2026) - Key Findings from Prioritised Frontline Oblasts, May 2026
Country: Ukraine Source: REACH Initiative Please refer to the attached file. Context and Rationale More than four years after the escalation of the full-scale war in Ukraine¹, the humanitarian situation across the country remains severe, with needs persisting among large segments of the population². Over time, the crisis has increasingly shifted from an acute emergency towards a more protracted and entrenched humanitarian context, as prolonged displacement³, repeated disruptions to essential services, and continued insecurity have increasingly shaped the living conditions of affected populations.⁴ While humanitarian needs have remained consistently high, their nature and underlying drivers have continued to evolve over time, reflecting the long-term consequences of a prolonged conflict and the growing strain on households and communities across Ukraine⁵. In the lead-up to the 2025-2026 winter season, Ukraine witnessed an intensification of repeated attacks targeting civilian and critical infrastructure, including energy facilities, schools, healthcare facilities, and other essential public infrastructure⁶. During the winter period, these sustained attacks resulted in a significant loss of electricity generation capacity across the country, leading to widespread planned and unplanned power outages, alongside disruptions to other essential utility services such as heating and water supply⁷. Combined with low temperatures, these disruptions further exacerbated humanitarian needs among affected populations, especially energy-related vulnerabilities across Ukraine. To monitor the evolution of humanitarian needs during the winter period, REACH Ukraine conducted the fourth round of the Calibration Assessment between January and February 2026. The assessment aimed to provide a mid-year update...
Original source: Relief Web