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Russian Offensive Campaign Assessment, September 12, 2026

ISW · Institute for the Study of War ·

Executive Summary

Ukrainian forces have successfully contested the initiative against Russia since late 2025, holding Russian forces to near-zero net gains and conducting successful counterattacks, particularly eliminating a significant Russian salient north of Lyman. Russia faces increasing casualty rates and declining recruitment, prompting Russian generals to request 800,000 additional troops, though Russia's training capacity is limited. Ukraine continues long-range strikes on Russian oil infrastructure and military targets, while President Zelensky suggests trilateral peace talks.

Why It Matters

This document provides a detailed, near-real-time assessment of the ongoing Russia-Ukraine war, highlighting critical shifts in battlefield initiative, Russia's manpower challenges, and Ukraine's strategic strike capabilities, which are crucial for understanding the conflict's trajectory and potential future escalations. It offers insights into both tactical developments and broader strategic implications, including potential Russian mobilization and Ukrainian diplomatic overtures.

Key Takeaways

  • Ukrainian forces have seized the strategic and operational initiative, successfully eliminating a key Russian salient north of Lyman and disrupting encirclement plans.
  • Russian generals are reportedly requesting 800,000 additional troops due to high casualties, but Russia's training and administrative capacity is limited to absorb such numbers.
  • Ukraine's long-range strike campaign is significantly degrading Russia's oil refining capacity and exports, impacting the Russian economy and military logistics.

Strategic Relevance

The report details Ukraine's successful contestation of the initiative, indicating a potential shift in the war's momentum. Russia's reported need for massive mobilization underscores its severe manpower issues and the unsustainability of current operations, while Ukraine's deep strikes demonstrate its evolving asymmetric capabilities against Russian infrastructure.

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Key Entities

UkraineRussiaVladimir PutinVolodymyr ZelenskyInstitute for the Study of WarDonetsk OblastLymanKupyanskDnipropetrovsk OblastZherebets RiverInternational Energy AgencyBelarus

Best For

Defense AnalystsPolicy MakersMilitary StrategistsIntelligence AnalystsGeopolitical Researchers

Related Themes

Russia-Ukraine WarMilitary StrategyForce GenerationDrone WarfareEconomic WarfareGeopolitical Competition

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