Statement 1 is Incorrect: Belarus is an Eastern European country that is not a member of the European Union. It maintains close political and economic ties with Russia and has never formally applied for EU membership. Statement 2 is Correct: Poland is a full member state of the European Union. It joined the bloc during the major eastward expansion in May 2004. Statement 3 is Correct: Germany is a full member state of the European Union. It is one of the original six founding members of the EU's predecessor, the European Economic Community, established in 1957. Statement 4 is Incorrect: Switzerland is not an EU member state. Although it is geographically surrounded by the EU and participates in the EU's single market and the Schengen Area through a series of bilateral treaties, it maintains its historic neutrality. It is a member of the European Free Trade Association (EFTA) instead. Therefore, the correct answer is 2 and 3.