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Russian Offensive Campaign Assessment, September 18, 2026

ISW · Institute for the Study of War ·

Executive Summary

The Kremlin continues to deny mobilization plans post-elections, despite needing more personnel to sustain its war effort in Ukraine. Poland has adjusted its air defense posture due to increased Russian border strikes and incursions. Russia also continues to nationalize foreign assets under national security pretexts.

Why It Matters

This document provides a comprehensive daily update on the ongoing Russian offensive in Ukraine, detailing key military, political, and economic developments that directly impact regional stability and international security.

Key Takeaways

  • The Kremlin denies post-election mobilization, but Russia's casualty rates necessitate future involuntary call-ups to sustain the war effort.
    Source evidence · PDF page 2
    The Kremlin continues to deny that Russia will conduct mobilization after its September 18-20 State Duma elections, likely in an effort to dissuade Russian citizens from fleeing abroad.
  • Poland has heightened its air defense posture due to increasing Russian drone incursions and strikes near its border, imposing costs on NATO.
    Source evidence · PDF page 2
    Poland has changed its air defense posture in response to increasing Russian strikes against border infrastructure and drone and other incursions into the territories of states neighboring Ukraine.
  • Russia is expanding its nationalization of foreign assets, seizing companies like Auchan and Nestlé under the guise of national security.
    Source evidence · PDF page 2
    Russian President Vladimir Putin seized several prominent foreign enterprises under the pretext of defending Russian national security as he continues to expand and exercise his power to nationalize foreign and Russian assets.

Strategic Relevance

The report highlights Russia's strategic challenges in manpower and its efforts to mitigate them, Poland's defensive responses to Russian aggression, and Russia's economic tactics, all of which have significant implications for the broader geopolitical landscape and NATO's eastern flank.

Source Website View PDF

Key Entities

RussiaUkrainePolandKremlinVladimir PutinDmitry PeskovDonald TuskNATOAuchanNestléL.E.V. ManagementRosimushchestvo

Best For

Defense AnalystsPolicy MakersIntelligence AnalystsGeopolitical Strategists

Related Themes

Russia-Ukraine WarNATO SecurityMilitary MobilizationEconomic WarfareAir DefenseGeopolitical Competition

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