What if Churchill hadn't been the junior partner?

I think that if Churchill, and not FDR, was the senior partner in the western alliance, there might not have been an iron curtain at the end of the war. Of the big three, Churchill was the champion of freedom and self determination for the polish and other Eastern Europeans. He even told FDR that they should threaten war against Stalin if he didn't withdraw the red army from the countries that had been overrun by them. Of course this fell of deaf ears. FDR believed naively that Stalin was reasonable. Churchill, however, had always known that Stalin could not be trusted and that he posed a threat to Europe even before the war broke out. Hitler, however was the greater immediate threat to Britain, and the alliance with Stalin was one of convdnienc only. But Churchill knew it wouldn't last forever.