Perhaps if Russia were not threatening and invading its neighbors, those countries would not be so interested in joining NATO. NATO was formed to protect western Europe from a Soviet invasion, not as a threat to the Soviet Union. If you want to talk about European history, then remember the difference between NATO and the Warsaw Pact. NATO is a voluntary defensive alliance; the Warsaw Pact was imposed upon the nations of eastern Europe by the force of arms. Russia is no innocent victim here.
Tell that to Serbia and Libya.