“Sixth, Indeed, the greatest loss of statesmanship in all American History was the tacit American alliance and support of Communist Russia when Hitler made his attack in June 1941. Even in the false theory that American military strength was needed to save Britain had now visibly vanished. By diversion of Nazi furies into the swamps of Russia, no one could any longer doubt the safety of Britain and all the Western world. These monstrous dictators were bound to exhaust themselves no matter who won. Even if Hitler won military victory, he would be enmeshed for years trying to hold these people in subjection. And he was bound even in victory to exhaust his military strength — and the Russians were bound to destroy any sources of supplies he might have hoped for. His own generals opposed this action.
American aid to Russia meant victory for Stalin and the spread of Communism over the world. Statesmanship again imperiously cried to keep out, be armed to the teeth and await their mutual exhaustion. When that day came there would have been an opportunity for the US and Britain to use their strength to bring a real peace and security to the free world. No greater opportunity for lasting peace ever came to a President and he (FDR) muffed it.”
Herbert Hoover
Freedom Betrayed — pg. 878