Poland didn't even border the Iron Curtain, and it's as far East as you could go without hitting USSR. It's a bit daft to insist that it's not in Eastern Europe.
Poland is in the UK. The UK is where Spain was, and most of Spain is now in France. Germany is in the Netherlands, with the Netherlands in Belgium. Nobody is quite sure what happened to Belgium, but this is largely because the inhabitants have a tendency to pretend to be French/German/Dutch to avoid having to explain ****.