Sanctuaries, once taken for granted, no longer exist.
As spring 2026 deepened the Russia-Ukraine conflict past its fourth year, the Institute for the Study of War released a May 22 assessment capturing a war transformed by Ukraine's expanded capacity to strike deep inside Russian territory. What began as a contest over frontlines has become something larger — a grinding attrition whose reverberations now reach Beijing summits and reshape the assumptions of global security. The battlefield no longer has a safe rear, and in that loss of sanctuary, the strategic logic of the entire conflict has quietly shifted.
- Ukraine's ability to strike hundreds of kilometers inside Russia has shattered Moscow's assumption of secure rear areas, forcing Russian commanders into an impossible choice between concentrated offense and dispersed defense.
- Russian offensive operations in eastern Ukraine continue, but mounting logistics failures, personnel losses, and the constant threat of deep strikes have visibly constrained their pace and ambition.
- A Beijing summit among major powers signals that the war is no longer a regional crisis but a fault line in a broader contest over global security arrangements and spheres of influence.
- Neither side holds a clear path to decisive victory — Ukraine's expanded reach raises costs for Russia without guaranteeing Ukrainian triumph, locking both into a brutal war of attrition.
- Civilian populations across contested eastern territories absorb the compounding weight of violence, displacement, and the slow erasure of ordinary life with no resolution on the horizon.
On May 22, 2026, the Institute for the Study of War released its latest assessment of Russian offensive operations in Ukraine — a document that arrived at a moment when the war's fundamental character appeared to be changing. For over two years, ISW's regular evaluations have served as the primary lens through which analysts track Russian military movements, unit deployments, and campaign objectives. The May 22 update continued that work, but the context surrounding it had grown considerably more complex.
The most consequential development shaping the assessment was Ukraine's expanded deep strike capability. Ukrainian forces had demonstrated a sustained ability to hit targets hundreds of kilometers inside Russian territory — military installations, logistics hubs, and infrastructure that Moscow had long treated as untouchable rear areas. The strategic implications were profound: sanctuaries no longer existed, and Russian military planners were forced to rethink how they positioned forces and stored supplies. Concentrate troops for a breakthrough offensive, and they become vulnerable to Ukrainian strikes. Disperse them for protection, and the capacity for decisive action evaporates.
Beyond the battlefield, a summit in Beijing among major powers underscored that the conflict had become embedded in a larger contest over global security and spheres of influence. Traditional alliances faced pressure, new alignments were forming, and what happened in eastern Ukraine carried weight far beyond Ukraine's borders.
Russian forces continued to pursue territorial gains in the east, but the pace was constrained by logistics, casualties, and the demands of rear-area defense. The war had settled into a grinding attrition — staggering in its human cost, with military losses mounting on both sides and civilian populations in frontline and occupied areas enduring violence and displacement without end. As of late May 2026, the trajectory pointed toward continued contestation rather than resolution, with ISW's assessments remaining an essential guide through the fog of a conflict that showed no clear path to its conclusion.
The Institute for the Study of War released its latest assessment of Russian offensive operations on May 22, 2026, as the conflict in Ukraine entered a new phase marked by shifting military capabilities and broader geopolitical realignment. The timing of the assessment coincided with emerging reports that Ukraine had expanded its capacity to strike targets deep within Russian territory—a development that analysts say fundamentally alters the strategic calculus of the war.
For more than two years, the ISW has provided detailed, regular evaluations of Russian military movements, tactical decisions, and campaign objectives across Ukraine. These assessments have become a primary reference point for understanding the day-to-day evolution of the conflict, tracking everything from unit deployments to supply line vulnerabilities. The May 22 update continued that work, examining the state of Russian offensive efforts at a moment when the momentum of the war appeared to be shifting in ways that extended far beyond the battlefield itself.
Ukraine's deepening strike capability represents a significant escalation in the conflict's scope. Rather than limiting military action to contested territory along the front lines, Ukrainian forces have demonstrated an ability to reach targets hundreds of kilometers inside Russia—military installations, logistics hubs, and infrastructure that Moscow had previously treated as secure rear areas. This expansion of Ukrainian reach has forced Russian military planners to reconsider how they position forces, store supplies, and conduct operations. The psychological and strategic weight of this shift cannot be overstated: sanctuaries, once taken for granted, no longer exist.
The broader geopolitical context adds another layer to the assessment. A summit in Beijing involving major powers signaled that the Russia-Ukraine conflict was no longer being viewed in isolation but as part of a larger contest over global security arrangements and spheres of influence. The contested nature of the international environment—where traditional alliances face pressure and new alignments form—means that developments on the Ukrainian battlefield carry implications far beyond the country's borders. Russia's reduced ability to operate from secure rear areas intersects with these larger questions about power, deterrence, and the rules that govern state behavior.
The ISW's May 22 assessment examined Russian offensive operations within this evolving context. The Institute's analysis suggested that Russian forces continued to pursue territorial gains in eastern Ukraine, but the pace and character of these operations appeared constrained by logistical pressures, personnel losses, and the need to defend against Ukrainian strikes. Russian commanders faced a dilemma: concentrate forces to achieve breakthrough offensives, or disperse them to reduce vulnerability to deep strikes. Neither option offered a clear path to the decisive victory Moscow had sought when the invasion began in 2022.
The human cost of this stalemate remained staggering. Across the contested territories of eastern Ukraine, military casualties mounted on both sides, while civilian populations in occupied and frontline areas endured ongoing violence, displacement, and the collapse of normal life. The war had become a grinding attrition, with no clear endpoint in sight. The ISW's assessments, while focused on military operations, implicitly documented the toll of this prolonged conflict on the people caught within it.
As of late May 2026, the trajectory of the war suggested a period of continued contestation rather than resolution. Ukraine's expanded strike capability had raised the cost of Russian operations without necessarily providing a path to Ukrainian victory. Russia maintained significant military capacity but faced constraints it had not anticipated. The international environment remained fluid, with the Beijing summit and other diplomatic developments hinting at potential shifts in how major powers engaged with the conflict. The ISW's ongoing assessments would continue to track these developments, providing the detailed operational analysis that had become essential for understanding not just what was happening in Ukraine, but what it meant for the broader global security landscape.
Citas Notables
Russia maintains significant military capacity but faces constraints it had not anticipated— ISW assessment analysis
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What does it mean that Ukraine can now strike deep inside Russia? Doesn't that change everything?
It changes the terms of the war, yes—but not necessarily the outcome. Russia can no longer treat its rear areas as safe zones for staging troops or storing ammunition. That forces difficult choices about how to position forces. But Russia still has enormous military capacity. It's a constraint, not a collapse.
So why does the ISW keep issuing these assessments? What are they actually tracking?
The day-to-day movement of Russian units, supply lines, where they're concentrating forces, how they're responding to Ukrainian strikes. It's the granular stuff—which tells you whether Russia is adapting, whether it's running out of certain capabilities, whether it can sustain its offensive. The big picture emerges from the details.
The Beijing summit is mentioned alongside the military assessment. Why does that matter?
Because the war isn't just about Ukraine anymore. How China, India, and other powers view the conflict shapes what support flows to Russia, what constraints exist on Ukraine, what the endgame might look like. The military assessment and the diplomatic environment are the same story now.
Is there a scenario where Russia wins this?
Depends on your definition of winning. Russia could hold territory and exhaust Ukraine into a negotiated settlement. But it can't achieve the quick, decisive victory it wanted in 2022. The cost is too high, the resistance too strong, and now Ukraine can strike back at Russian logistics. That's a very different war than the one Moscow planned.
What happens next?
More of what we're seeing—grinding operations, Ukrainian strikes on Russian targets, diplomatic maneuvering, and the slow erosion of both sides' capacity to sustain the conflict. The ISW will keep tracking it all. When the momentum shifts, the assessments will show it first.