Ukrainian forces have defeated the initial Russian campaign of this war. That campaign aimed to conduct airborne and mechanized operations to seize Kyiv, Kharkiv, Odesa, and other major Ukrainian cities to force a change of government in Ukraine. That campaign has culminated. Russian forces continue to make limited advances in some parts of the theater but are very unlikely to be able to seize their objectives in this way. The doctrinally sound Russian response to this situation would be to end this campaign, accept a possibly lengthy operational pause, develop the plan for a new campaign, build up resources for that new campaign, and launch it when the resources and other conditions are ready. The Russian military has not yet adopted this approach. It is instead continuing to feed small collections of reinforcements into an ongoing effort to keep the current campaign alive. We assess that that effort will fail.

The ultimate fall of Mariupol is increasingly unlikely to free up enough Russian combat power to change the outcome of the initial campaign dramatically. Russian forces concentrated considerable combat power around Mariupol drawn from the 8th Combined Arms Army to the east and from the group of Russian forces in Crimea to the west. Had the Russians taken Mariupol quickly or with relatively few losses they would likely have been able to move enough combat power west toward Zaporizhiya and Dnipro to threaten those cities. The protracted siege of Mariupol is seriously weakening Russian forces on that axis, however. The confirmed death of the commander of the Russian 150th Motorized Rifle Division likely indicates the scale of the damage Ukrainian defenders are inflicting on those formations. The block-by-block fighting in Mariupol itself is costing the Russian military time, initiative, and combat power. If and when Mariupol ultimately falls the Russian forces now besieging it may not be strong enough to change the course of the campaign dramatically by attacking to the west.