I believe Russia would interdict arms shipments in a NATO country if they could identify them.
But only once there is a new government in Ukraine.
And I don’t believe NATO would respond militarily.
NATO is a paper tiger on the verge of collapse, in spite of the surface political solidarity you now see. When the shooting starts it’ll be every man for himself.
Ask yourself this: what are the odds a POTUS would send an expeditionary army to Romania to free them from a Russian occupation? They’re right across the street from Ukraine, on the Black Sea and quite vulnerable.
The closest real NATO military is Turkey.
I contend the odds are 0% even.
“I believe Russia would interdict arms shipments in a NATO country if they could identify them.”
And then NATO would start interdicting Russians in Russia. If that’s what Putin wants to do then that’s up to him.
Imagine how the Turks will react if Ukraine is accepted into the EU?
My guess is they'll leave NATO.