my friends enemy is my enemy..Alliances shift and change that's...

my friends enemy is my enemy..
Alliances shift and change that's true .
no love lost between Poles and Russians.
I dont think the ages old ethnicity per se is so important as the nationality , language, religion and who they identify as now.
Central and Eastern Europe is so very mixed partly due to waves of migration, conquest and more recently Soviet Russia transplanting millions into disparate corners and regions.
These "buffer" states are always in a tricky position wherever they are.
Poland. So often the flashpoint.
Naploeon invaded Russia for her.
And we all know what happened there.