In the Fall of 1940, Dr Henry Dawson felt the Allies needed to enlist the widest possible diversity of humans and nature, if they were going to win the ideological and military war against the then very attractive* ideologies and very formidable armies of the Fascists + Nazis + Communists and their fellow travelling ilk.
(* See Anne Morrow Lindbergh's October 1940 bestseller, Wave of the Future, for proof of that claim.)
For in late 1940, the German-led coalition really included not just Germany itself together with Italy, Japan and Russia but also had silent supporters and fellow travellers in many nominally neutral fascist-leaning countries in Europe, South America and elsewhere.