Considering we are 20 days into what should have been a 2 day invasion, I don't think Russia's supply line can even reach the German border without running out of fuel 10 times and getting strafed to death.

Oh my bad. I guess columns of vehicles stuck on the mud with broken tires and empty gas tanks, stockpiled with expired military rations and frontline soldiers armed with rifles that have mounting rails but fielded no mods or optics, orders handed down on paper, and an airforce that couldn't establish air superiority for 20 days on a much smaller country is all according to Putin's plan.

Truly a marvel of the modern russian military machine.