Buchanan's take on it is that the British guarantee to Poland should never have been made because it was unenforceable and contrary to British interests. Without the guarantee, the Poles would have been forced to the table and there would have been no war between Germany and the western European powers. He believes that once at war, Britain should have accepted Hitler's 1939 and 1940 peace offers when the German conquest of Poland was a fait-accompli and that the Nazi and Soviet regimes might have crumbled without western intervention if they had been left to fight a protracted war between themselves.
He wrote a whole book on the subject. Even if you disagree with some or all of it, I think it's a pretty interesting read.
ok, I'll check it out. counterfactuals are fun
I guess it's possible that the Nazis and Soviets could have beat each other to sh**t while the bourgeois republics sat and watched