Azovstal.

This is coolbert:

"built the bomb shelters first, then rebuilt the steel mill above them, so it's well protected, but perhaps not enough.”

Let me explain!

The siege of the Azovstal steel works the Ukraine Conflict. Industrial complex Mariupol the last hold-out of the Ukrainian military besieged but not be stormed. The order of Vlad personally.

From a variety of sources and thanks to one and all.

1. "EXPLAINER: Why the battle for Mariupol's steel mill matters"

From abcnews.go.com the original story [?] By The Associated Press April 21, 2022.

"Russian President Vladimir Putin is claiming control over Ukraine’s seaside city of Mariupol even as its defenders are holding out inside a massive steel mill near the water"

2. "Putin tries to claim victory in Mariupol but won’t storm last holdout of Ukrainian resistance"

Thanks to PBS here the tip from yahoo.com  Apr 21, 2022 .

"KYIV, Ukraine (AP) — Russian President Vladimir Putin tried to claim victory in the strategic port of Mariupol on Thursday, even as he ordered his troops not to storm the last pocket of Ukrainian resistance in the war’s iconic battleground."

3. "Russia claims to have 'liberated' Mariupol after weeks of bombardment"

From msn.com the story by Niamh Cavanagh.

"LONDON — Russian officials claimed Thursday that the port city of Mariupol in eastern Ukraine had came under their control. The besieged city has been reduced to rubble since the launch of the invasion on Feb. 24 as Russian forces attempted to capture the city for eight weeks."

See additionally regarding that four-square mile [about ten square kilometers] steel works Azovstal. A vast complex with a labyrinth of tunnels and BOMB SHELTERS already in place.

4. "Inside Azovstal: The Ukrainian Metalworks That Has Become A 'Last Stand' Fortress"

From RFE/RL April 19, 2022.

The photo essay by industrial photographer Victor Macha. As was done in 2016.

"A photographer [Viktor Macha] who documented Mariupol's Soviet-era iron-and steelworks shares insights into the factory set to hold a final showdown between Ukraine's Azov Battalion and Russian forces."

Recall in warfare that pockets of resistance can sustain themselves for VERY LONG period of time if possessing:

*Strong leadership * Ammunition * Water * Food * Medical supplies.

Assume also that the pronouncements of Vlad to eradicate Azov will make those inside the steel work complex EVEN MORE determined to fight unto the very end, whenever that will be!

coolbert.