The communists in Russia went from a zeal about a world revolution to "socialism in one country" in ~ 5 years and everybody just shrugged and went with it. The actual Cold War never escalated into a hot one. It easily could have, but it didn't. How did declaring war on the USSR help Germany to repay debts? Did they (hope to) capture a hoard of gold or get a leveled reward from the quest giver? The IOUs were (afaik) mostly held by German companes and individuals. A consolidated dictatorship can deal with this. Monetary reform, or just defaulting because **** you, we can. Soviets did it with Imperial Russia's debt after the civil war too and in the end got away with it.
Brits may prefer whatever they want. But as Jhessail said, Churchill's rhetoric was never really put to a test. The BEF was evacuated, cash&carry did continue, lend-lease was enacted. Sure the Navy could protect the islands and most colonies indefinitely. But why? What is there to gain by remaining at some sort of permanent sitzkrieg with Germany, when you can just admit it's what it is and get on with it, since Germany doesn't really want anything from you.
Brits may prefer whatever they want. But as Jhessail said, Churchill's rhetoric was never really put to a test. The BEF was evacuated, cash&carry did continue, lend-lease was enacted. Sure the Navy could protect the islands and most colonies indefinitely. But why? What is there to gain by remaining at some sort of permanent sitzkrieg with Germany, when you can just admit it's what it is and get on with it, since Germany doesn't really want anything from you.