Ruined Azovstal steel plant in Mariupol after Ukrainian troops surrendered to Russian and DPR forces.

The Azovstal Iron and Steel Works fell silent on May 20. The remaining Ukrainian troops inside the sprawling Soviet-era plant surrendered. That ended the siege of Mariupol. It had lasted almost three months.

The victory went to Russia and the Donetsk People’s Republic. The city is in southeastern Ukraine’s Donetsk Oblast. It was a strategic prize. Control of Mariupol gives the Russian-backed forces a land bridge to Crimea. It also severs Ukraine’s access to the Sea of Azov. The battle for the city was brutal and grinding.

The siege began on February 24, 2022. That was the first day of the Russian invasion. For 86 days, Russian Armed Forces and DPR People’s Militia fought the Ukrainian Armed Forces block by block. The city was reduced to rubble. The Red Cross described conditions there as “apocalyptic.” That is not a word aid agencies use lightly.

Ukrainian authorities accused Russia of engineering a major humanitarian crisis. The full extent of that crisis remains unclear. What is known is that civilians were trapped without water, food, electricity, or heat. Shelling hit residential buildings. A maternity hospital was bombed. A theater where hundreds had taken shelter was destroyed. The evidence of civilian harm is extensive. The Ukrainian government has accused Russia of deliberately targeting civilians and infrastructure. Those accusations amount to violations of humanitarian law.

Mariupol was a key city before the war. A port on the Sea of Azov. An industrial hub. Home to half a million people. By the end of the siege, much of it was uninhabitable. The fight for the city became a symbol of Ukrainian resistance. The defenders at Azovstal held out for weeks in the tunnels and bunkers beneath the steel plant. They were outnumbered and outgunned. They ran low on ammunition, food, and medical supplies. The plant was bombed relentlessly from the air and shelled from the ground. Still, they held.

Then they surrendered.

The fall of Mariupol is a significant blow to Ukraine. It marks the first major city to be fully captured by Russian-backed forces during the invasion. It gives Moscow a tangible victory after months of stalled advances elsewhere. The strategic location of the city made it a prized target from the start. Russia has been seeking to gain control over Ukraine’s eastern and southern regions. Mariupol was the hinge.

International criticism has been sharp. Many have accused Russia of committing atrocities. The humanitarian toll is staggering. Bodies were left in the streets for weeks. Mass graves were dug. The exact number of dead is not known. Thousands are believed to have been killed. Hundreds of thousands fled. Those who stayed endured conditions that are hard to describe.

The siege is over. The cost is not yet fully counted. The city is in Russian hands. The defenders are in captivity. The war goes on. Mariupol is a ruin. It is also a warning about what other cities may face.