The Generalplan Ost ("General Plan for the East") called for deporting the population of occupied Eastern Europe and the Soviet Union to Siberia, for use as slave labour or to be murdered.[316] To determine who should be killed, Himmler created the Volksliste, a system of classification of people deemed to be of German blood.[317] He ordered that those of Germanic descent who refused to be classified as ethnic Germans should be deported to concentration camps, have their children taken away, or be assigned to forced labour.[318][319] The plan also included the kidnapping of children deemed to have Aryan-Nordic traits, who were presumed to be of German descent.[320] The goal was to implement Generalplan Ost after the conquest of the Soviet Union, but when the invasion failed Hitler had to consider other options.[316][321] One suggestion was a mass forced deportation of Jews to Poland, Palestine, or Madagascar.[312]