In 1937, Himmler decided that he could increase the Ahnenerbe's visibility by investigating Hans F. K. Günther’s claims that early Aryans had conquered much of Asia, including attacks against China and Japan in approximately 2000 BC, and that Gautama Buddha was himself an Aryan offshoot of the Nordic race. Walther Wüst later expanded on this theory, stating in a public speech that Adolf Hitler's ideology corresponded with that of the Buddha, since the two shared a common heritage.[citation needed] However, according to contemporary research Hitler himself was not interested in Buddhism or Tibet.[45]