FDR

“Comrades! It is in the interest of the USSR, the Land of the Toilers, that war breaks out between the [Nazi] Reich and the capitalist Anglo-French bloc. Everything must be done so that the war lasts as long as possible in order that both sides become exhausted. Namely for this reason we must agree to the pact proposed by Germany and use it so that once this war is declared, it will last for a maximum amount of time.”

"FDR told a former U.S. ambassador to the Soviet Union, William Bullitt, “If I give him [Stalin] everything I possibly can and ask nothing from him in return, noblesse oblige – he won’t try to annex anything and will work with me for a world of democracy and peace.”"

noblesse oblige

https://www.aier.org/article/fdr-and-stalin-planned-the-future-of-the-world/

I just have a hunch that Stalin is not that kind of man. Harry [Hopkins] says he's not and that he doesn't want anything except security for his own country, and I think that if I give him everything I possibly can and ask nothing from him in return, noblesse oblige, he won't try to annex anything and will work with me for a world of democracy and peace.

Response to advice from Ambassador William C. Bullitt to pursue a containment policy against the Soviet Union (1943)

Franklin D. Roosevelt Life (August 30, 1948), "How We Won the War and Lost the Peace", p. 94

https://libquotes.com/franklin-d-roosevelt/quote/lbx7w6j

https://en.wikipedia.org/wiki/Operation_Keelhaul

https://www.csmonitor.com/Books/Book-Reviews/2015/0305/Roosevelt-and-Stalin-details-the-surprisingly-warm-relationship-of-an-unlikely-duo

https://encyclopedia.ushmm.org/content/en/article/the-evian-conference