Vlad started blowing up the railroads about 15 minutes after Austin and Cupcake left town. It will take months to ship stuff there via the Black Sea.
Russia has the advantage of much shorter supply lines, it would seem.
Turkey's Erdogan has said "Nay" to this proposition. He ain't getting his country involved.
There's already the issue of the drones - and the Russians don't forget.
It is unclear how effective the Russians will be at interdicting European transport to the Ukraine.
We simply do not know how effective they will be. It is a valid question.
From previous wars, it is difficult to predict. There is also the potential (seems to be happening) for Ukraine to interdict supplies coming from Russia.
Points worth pondering.
For example, anti-aircraft munitions and anti-tank weapons are much easier to transport than tanks and armored personnel carriers.
it is quite possible we started shipping the minute this stuff started.
there was a freeper within days of the invasion starting that commented that they had just seen a huge military train going east, (had never seen one before at all).