Speer later reported that before World War II, Hitler felt “deeply irked” and “cheated” when he heard that Stalin was building the world’s tallest monumental edifice in Moscow. When Germany went to war against the Soviets, the Führer was delighted that Stalin’s project had to stop. He told Speer, “Now this will be the end of their building for good and all.”
Source:
Beschloss, Michael R. “The Conquerors.” The Conquerors: Roosevelt, Truman, and the Destruction of Hitler's Germany, 1941-1945. New York: Simon & Schuster Paperbacks, 2007. 291. Print.
Further Reading:
Yup must have been a dick measuring contest. Couldn't have been all that slavs are subuman rhetoric. Oddly enough the german army did allow slav soldiers as they were desperate and approached the end of the war.