 Annika Mombauer in contrast to Röhl observed in her work on Helmuth von Moltke that despite a great deal of research and debate "there is no direct evidence to prove that military decision-makers understood December 1912 as a decisive moment at which a future war had been agreed upon".Fischer's discovery of Imperial German government documents prepared after the war began, calling for the ethnic cleansing of Russian Poland and German colonization to provide Germany with "Lebensraum" (living space) as a war aim, has also led to the widespread acceptance by historians of continuity between the foreign policies of Germany in 1914 and 1939.Fischer alleged the German government hoped to use external expansion and aggression to check internal dissent and democratization.