 The UK did not condemn the Soviet invasion of Poland in 1939, but declared war on Germany.Later they sided with the Soviet Union against Germany after the Axis invasion of the Soviet Union.During the post-Second World War era the Allies split into two blocs, a balance of power emerged among the Eastern Bloc (affiliated with the Soviet Union and the Socialist nations of Central and Eastern Europe), the Western Bloc (affiliated with the Western democracies, particularly France, the United States, and the United Kingdom), and neutral or non-aligned countries (including Ireland, Sweden, Switzerland, Austria and Yugoslavia) with Germany divided between the Western Block (northwest and southern portions of former country) and the Eastern Bloc (northeast portion, including most of Prussia's former lands) until 1989.