Estonia, Latvia, Lithuania were always part of "Russia". Would you suggest they should be invaded as soon as Ukraine is fully occupied?
No it wasn't. Here's a quick timeline of Estonia.
1219–1346 (127 years): Danish Kingdom
1346-1561 (215 years): Livonia, Polish-Lithuanian Commonwealth
1561–1710 (149 years): Swedish Empire
1710–1917 (207 years): Russian Empire
1944–1991 (47 years): SovietsRussians are good at creating false narratives.
Russia is allegedly entitled to own half of Europe due to some deranged reasons. Everyone who disagrees with that is supposedly a nazi or something similar.
The concept of hypocrisy is entirely foreign and incomprehensible to anyone who honestly supports Russian imperialism..
Königsberg(Kaliningrad) was always German. Kuril islands were always Japanese.
While Russian army is distracted - Germany and Japan should get their territories back now.