The point is that Lithuania grabbed a city full of Poles by force and then shot/opressed/stole from them, that gave Poland every right to intervene via military means when diplomacy failed didnt it?
Here is the glorious Polish "army" or better "zbrodniarzy w mundurach" in action:
In Lviv (then Lwów or Lemberg) in 1918, after the Polish Army captured the city, seventy-two Jews were killed by a Polish mob that included Polish soldiers. The report states that in Lemberg Lviv "disreputable elements [from the Polish Army] plundered to the extent of many millions of crowns the dwellings and stores in the Jewish quarter, and did not hesitate to murder when they met with resistance."
Immediately after capturing the city, in the end of November, elements of Polish forces as well as common criminalslooted the Jewish and Ukrainian quarters of the city, killing approximately 340 civilians.
which if you look at the maps of the lands they claimed was kind of megalomaniac
It is natural for intellectual dwarfs, gumishu.
If Vilnius was Lithuanian, they shouldn't have entered the battlefield, simple as that. As they did enter the battlefield, they should have expected we would fight for it.
Wow. Why did you fight for 3 weeks against the Nazis then in 1939? Why fight if it is yours? The Lithuanians fought because it was their capital and because they knew what the Polish army will do to their city after the capture: loot, destroy the stores, steal private property and kill civilians. Any reasonable person would defend their city against this type of barbarians.