100 million souls could have been saved, if only there was a Pinochet in Russia around 1918.
I have real doubts about FDR and Marshall given their conduct in WWII and the aftermath. A little known fact, FDR's VP for his first three terms was a communist. There was a mini revolt at the democratic convention and FDR switched to Truman as his VP. If he hadn't, the US would have had a communist as POTUS.