My favorite quote from Hitler: "as late as 1941 with the war in bloom he [Hitler] stated “basically National Socialism and Marxism are the same” in a speech published by the Royal Institute of International Affairs."

Also relevant: "And Hitler favorite Albert Speer, the Nazi armaments minister whose memoir became an international bestseller, wrote Hitler viewed Stalin as a kindred spirit, ensuring his POW son received good treatment, and even talked of keeping Stalin in power in a puppet government after Germany’s eventual triumph. His views on Churchill and Roosevelt were decidedly less kind."