The Russians aren't on the offensive. They are grinding the Ukraine defense lines down using their massive advantage in ammo and missiles to do so. Then, advancing slowly over the dead bodies.
It's a war of attrition and the Russians have all the advantages.
Ukraine is running out of Western money, critical low on ammo and, more importantly, running out of troops. There will come a point when their military collapses. Ukraine will either have surrender or Russia will advance all the way to the Dnieper river with little resistance.
“The Russians aren’t on the offensive.”
You do not win wars by playing defense when you can easily go on the offense.
Again, If you have overwhelming superiority as you claim Russia does, and the enemy has no resources as you claim, there is no need to “grind down” anything. Its stupid and a waste.
Thats like the US landing in Normandy and instead of advancing with its huge advantage, instead just sitting on the beach head to “grind down” Germany. Or Russia just sitting outside Moscow to “grind down” the Germans. Completely asinine. Any General who would recommend that would be court martialed for aiding and abetting the enemy.