This is some tankie bullshit.
“They didn’t invade Poland, modern Poland is to the West, they invaded lands that belong to Ukraine and Belarus”
My brother in Christ - the entire country of Poland moved to the West because the Soviets annexed the east and demanded Germany cede territory to Poland when redrawing the map after WW2. This displaced millions of ethnic Germans who had lived there for centuries. The annexed land was then given to the Belarus and Ukrainian SSRs to administer, and inherited by these new countries when the USSR broke apart.
Your argument is like saying the US didn’t invade Mexico because that land is now part of Texas.











They were Polish territories because Poland held and administered them. They were also part of the PLC before the Russian empire seized them…
https://en.wikipedia.org/wiki/Partitions_of_Poland
We can argue all day about what conditions grant a right to a territory. Or we can cut the bullshit and stop pretending that the Soviets sending the Red Army across the Polish border to conquer land, while raping the inhabitants, was anything but an invasion.