The following is an excerpt from a speech Hitler gave in Nuremberg to the Labor Front on September 12, 1936. How Germany has to work to wrest a few square kilometers from the ocean and from the swamps while others are swimming in a superfluity of land!
If I had the Ural Mountains with their incalculable store of treasures in raw materials, Siberia with its vast forests, and the Ukraine with its tremendous wheat fields, Germany and the National Socialist leadership, would swim in plenty!

According to this excerpt, Hitler believed that Germany would achieve greatness if it

could remove troops from the Ural Mountains.
was not under Socialist leadership.
could conquer the European continent.
had greater access to natural resources.