While I agree that in Eastern Europe anti-EU often means pro-Russia, Poland is a more of an exception here. Poland still has a very negative aftertaste of Russi

While I agree that in Eastern Europe anti-EU often means pro-Russia, Poland is a more of an exception here. Poland still has a very negative aftertaste of Russia after WWII. But if anything, Eastern European countries will cling to NATO more than ever, they most certainly won't leave it. Just look at the most recent speech of the Czech president, who is generally pro-Russian (the president, not the whole country). In the speech he absolutely condemned Russia's aggression and expressed support to Ukraine. Moreover, he urged to kick Russian Federation out of the SWIFT system as soon as possible.