>>/33521/
Maybe Poland's Croatia, not Lithuania? Both are still Slavs, further west, Catholic in contrast with Orthodox, and was historically the nemesis of Russia/Serbia, before Prussia/Austria ate it up. They were both united with a different non-Slavic Catholic power before being eaten up by Prussia/Austria (Poland with Lithuania, Croatia with Hungary). Both had crazy Serb/Ruthenian minorities as well.
It's just that Poland wasn't a part of the USSR.