Russia vs. Ukraine: Who is better equipped for the winter war?

As temperatures plunge in Ukraine, the war is entering a new and brutal phase. Russia’s attacks on critical infrastructure amount to weaponizing winter.
As Ukrainian civilians shelter in bombed-out houses without power and water and soldiers in flooded trenches face heavy shelling.
What will it take for one side or the other to gain advantage as fighting slows and conditions worsen?
We’re asking: Russia vs. Ukraine: Who is better equipped for the winter war?