Tanks in urban warfare: Putin is threatened with a new catastrophe like in Grozny. Russian forces are "increasingly adding tank groups to attack infantry groups" stationed around the town.
Observers had initially given Ukraine good chances in defense, but optimism is rapidly dwindling. Taking Avdiivka would allow Moscow to significantly expand its logistical operations and restrict Ukraine's mobility against Russian positions in Donetsk. That, in turn, would pave Russia's way to Kostyantynivka - a "pretty important fortress"