You know what we never supplied to Russia?
The 20 millions lives it spent to defeat the nazis, including over 10 million military.
What could Hitler have done if he hadn’t opened a 2 front in the East….and been defeated by Russia…largely before we ever landed in Normandy…
If we want to remember bad treaties with Hitler, let’s look at Neville Chamberlain…..and even our bosom buddies we are now backing in Ukraine who enthusiastically embraced the nazi goals of racial purity through genocide and still parade their WW2 nationalist units that showed valor in murdering Jews, Poles, Roma, and after 1945, “communists”
Most of that was due to Stalin's incompetence. The Soviets won in spite of Stalin.
Hitler’s mistake was not treating the captured Russians and Ukrainians humanely, he probably could have raised an army of Russians and Ukrainians eager to defeat Bolshevism, but his brutality gave them no choice but to support Stalin.