100 days of war: Russia advances in east as West pledges heavy weapons

Thousands killed in fighting; millions displaced; estimated 22,000-50,000 dead in Mariupol alone; 800 civilians sheltering in chemical factory; Ukraine losing 60-100 soldiers daily.
Nobody really believed it would happen.
A Ukrainian student's reflection on the night the invasion began, capturing the widespread disbelief that preceded the war.

One hundred days after Russian forces crossed into Ukraine, the war has shed its early chaos and hardened into something older and grimmer: a war of attrition, measured in kilometers of rubble and columns of daily casualties. Moscow, having failed to decapitate Kyiv, has turned its weight eastward toward the Donbas, where the city of Sievierodonetsk now stands as the symbolic fulcrum of a conflict that may grind on through year's end. The West, led by Washington, is threading a narrow passage — supplying enough to prevent Ukrainian collapse, but calibrating carefully against the danger of provoking a cornered nuclear power into something far worse.

  • Russia controls 80% of Sievierodonetsk, and its fall would hand Putin full command of Luhansk — a momentum shift that could define the war's next chapter.
  • Ukraine is bleeding at a rate of 60 to 100 soldiers killed every single day, with 500 more wounded, while 800 civilians — many of them children — shelter beneath a chemical factory as artillery pounds the city above them.
  • Mariupol has become a city of the unburied: somewhere between 22,000 and 50,000 dead, thousands still trapped under rubble, families searching spreadsheets and social media to find their own.
  • Biden has pledged advanced rocket systems to Kyiv, but only four units, weeks away from deployment — a commitment shaped as much by fear of Ukrainian success provoking Putin as by fear of Ukrainian defeat.
  • Western officials now speak openly of a war that could last until the end of the year, the battlefield frozen in a slow, devastating grind neither side can quickly break.

On the night of February 23rd, a 22-year-old student organizer sat with friends in Kyiv and talked about the unthinkable. Nobody really believed it would happen. The logic against invasion seemed sound — Russian troop levels looked insufficient, Moscow's own population had not been prepared, the economic consequences appeared catastrophic. All of it proved wrong.

One hundred days later, the war has abandoned its early, chaotic shape and settled into something grimmer. After failing to encircle Kyiv and retreating from the north, Russian forces regrouped and drove eastward into the Donbas — the industrial heartland comprising Luhansk and Donetsk. The focal point is now Sievierodonetsk, where Russia controls roughly 80 percent of the city. Capturing it entirely would give Putin symbolic and strategic command of all of Luhansk, consolidating a momentum shift that has been building for weeks.

The human cost is staggering. President Zelenskiy disclosed that Ukraine is losing between 60 and 100 soldiers killed each day, with 500 more wounded. Beneath a chemical factory in Sievierodonetsk, some 800 civilians — many of them children — shelter from the fighting above, echoing the desperate final weeks at Mariupol's Azovstal steelworks. In Mariupol itself, the scale of death is almost incomprehensible: estimates range from 22,000 to 50,000 killed during the siege, with thousands of bodies still buried under rubble or in unmarked graves. As summer heat arrives, families search social media spreadsheets trying to identify the dead.

Washington has responded with a pledge of advanced multiple-launch rocket systems — weapons Ukrainian commanders say could be transformative in slowing Russia's advance. But the commitment is narrow: only four systems approved, weeks from deployment. And observers note that Biden's calculus is double-edged. He appears determined to prevent Ukraine's military collapse, but equally wary of enabling a decisive Ukrainian victory that might push a cornered Putin toward catastrophic escalation. The support being offered, it seems, is as carefully measured against the risks of winning as against the certainty of losing.

One hundred days into Vladimir Putin's invasion of Ukraine, the war has settled into a grinding eastern campaign that bears little resemblance to the swift victory Moscow once seemed to promise. On the night of February 23rd, as Russian forces crossed the border, a 22-year-old student organizer named Volodomyr Ksienich sat with friends in Kyiv, talking about the unthinkable. "Nobody really believed it would happen," he said later. The skepticism was widespread and reasonable. Military analysts had noted that Russian troop concentrations appeared insufficient to occupy an entire nation. Moscow's state media had done almost nothing to prepare its own population for war. The economic sanctions that would follow seemed so catastrophic that no rational leader would accept them. All of this logic was sound. All of it proved wrong.

What followed was a war of attrition that has killed thousands, displaced millions, and fundamentally reshaped the European security order. After failing to encircle Kyiv and being forced to retreat from the north, Russian forces regrouped and pivoted their assault toward Ukraine's industrial heartland in the east—the Donbas region, which comprises Luhansk and Donetsk provinces. The focal point of this new campaign is the city of Sievierodonetsk, where Russian forces now control approximately 80 percent of the urban area. Capturing it entirely would hand Putin control of all of Luhansk, a symbolic and strategic prize that would consolidate the momentum shift on the battlefield.

The human toll of this grinding advance is staggering. Ukrainian President Volodymyr Zelenskiy disclosed to American media that his forces are sustaining between 60 and 100 soldiers killed in action each day, with roughly 500 more wounded. In Sievierodonetsk itself, about 800 civilians—many of them children—have taken shelter beneath a chemical factory as the fighting rages above ground, a scene that echoes the desperate final days of Mariupol's Azovstal steelworks. The Russian strategy has shifted from attempting large-scale encirclements to focusing on smaller tactical pockets, or "cauldrons," and concentrating overwhelming firepower on Sievierodonetsk itself. A Western official acknowledged this week that the loss of the city, while significant, may not prove decisive to Russia's broader Donbas campaign, and suggested the war could now grind on until the end of the year given the glacial pace of Moscow's territorial gains.

Mariupol, the besieged port city that fell to Russian forces last month, presents a catastrophe of a different kind. An adviser to the city's mayor estimated that 22,000 people died during the two months of fighting, though someone coordinating burials there believed the true figure was closer to 50,000. With summer approaching and temperatures rising, the smell of decomposing bodies drifts through certain streets. Thousands of corpses remain trapped under rubble, in apartments, or in shallow, often unmarked mass graves. Families are left scrolling through social media groups and spreadsheets of the dead, trying to identify their loved ones and arrange burials in a process that has become chaotic and prolonged.

In response to Ukraine's mounting desperation, President Joe Biden announced this week that the United States would send advanced multiple-launch rocket systems to Kyiv—a weapon Ukrainian military leaders have been urgently requesting as they struggle to slow Russia's eastern advance. A Ukrainian parliamentarian and special forces commander told the Guardian that such systems could be transformative: "If our partners give us heavy artillery and advanced systems like MRLS, we can win and take back occupied territory." Yet the commitment came with significant caveats. Biden approved only four systems, and they will not be operational for several weeks. More tellingly, observers noted that while Biden has made clear he will not allow Ukraine's complete military collapse, he appears equally concerned about the opposite scenario—a decisive Ukrainian victory powered by Western weapons that might provoke a cornered Putin into catastrophic escalation. The calculus of American support, it seems, is as much about managing the risks of success as preventing the certainty of failure.

If our partners give us heavy artillery and advanced systems like MRLS, we can win and take back occupied territory.
— Roman Kostenko, Ukrainian parliamentarian and special forces commander
The situation is very difficult – we're losing 60 to 100 soldiers per day as killed in action and something around 500 people as wounded in action.
— President Volodymyr Zelenskiy
The Hearth Conversation Another angle on the story
Inventor

Why does Sievierodonetsk matter so much? It's one city among many.

Model

Because it's the gateway to controlling an entire region. Once Russia holds all of Luhansk, they've consolidated the Donbas—the industrial heart of Ukraine. It's not just territory; it's the narrative of momentum.

Inventor

The casualty figures are staggering. Sixty to a hundred Ukrainian soldiers killed every day. Does that number feel sustainable to you?

Model

No. That's the grinding attrition strategy at work. Russia has more bodies to throw at the problem, but Ukraine is fighting for its existence. Sustainability isn't the question—survival is.

Inventor

What struck you most about the Mariupol reporting?

Model

The uncertainty. Families don't know if their loved ones are under rubble, in a mass grave, or simply gone. The estimates range from 22,000 to 50,000 dead. That gap—that 28,000-person gap—is the fog of war made concrete.

Inventor

Biden's sending rocket systems. That sounds decisive.

Model

It sounds that way, but it's four systems arriving weeks from now. Biden is threading a needle: he can't let Ukraine lose, but he's terrified of what happens if Russia loses decisively. It's a war fought at the speed of political caution.

Inventor

There's a strange detail about superyachts going dark. Why include that?

Model

Because it shows how the war extends beyond the battlefield. Oligarchs are erasing their assets from tracking systems. Even the wealthy are running.

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