Why was Germany so interested and successful in taking land in Eastern Europe?

According to the Nazi government this goal was pursued by Germany to secure a fair rearrangement of territory for the common benefit of a new, economically integrated Europe, which in Nazi terminology meant the continent of Europe with the exclusion of the "Asiatic" Soviet Union.

kennedy used a range of this to develop a 'flexible response' plan for any international crisis. “he also expanded the it was important, because it ordered the fall of khruschev.