MUST READ:
https://www.globalresearch.ca/history-of-world-war-ii-americas-was-providing-military-aid-to-the-ussr-while-also-supporting-nazi-germany/5449378

Harry Truman, was quoted in the pages of New York Times in June 1941 as saying,

“If we see that Germany is winning the war, we ought to help Russia; and if that Russia is winning, we ought to help Germany, and in that way let them kill as many as possible …”