It is not true ..
"In 1934, Hitler himself had spoken of an inescapable battle against both Pan-Slavism and Neo-Slavism, the victory in which would lead to "permanent mastery of the world", though he stated that they would "walk part of the road with the Russians, if that will help us."" http://en.wikipedia.org/wiki/Molotov%E2%80%93Ribbentrop_Pact...