John Charmley has written a very interesting and engaging, (and controversial,) history book. Charmley's main argument is that Churchill made a huge mistake rejecting peace feelers from Hitler. That the war bankrupted Britain badly, putting Britain in debt to the USA until 2006, lost Britain her Empire and relegated Britain to a second rate power, a virtual satellite of the now all powerful USA.
This revisionist history book is quite convincing if not disturbing. Charmley argues that without Britain's participation in the war we would still be a powerful world power, that the Holocaust hadnt occurred yet in 1940-41 and therefore isnt part of the argument (something I found too convient because we know its going to happen and the Nazis had set up Ghettoes and Concentration camps where people were dying) and that we were later allied to Stalin's USSR who had people dying in Gulags, mass murder, deportations of the entire peoples to Siberia and Central Asia, the arrest and sometime execution of Russian POWs, secret police and torture AND because they are on our side Stalin extends his control over Eastern Europe for the next 40 years!
Charmley argues too that Britain staying out of the war does not guarantee a Geman victory, instead Hitler and Stalin could have battled each other into exhaustion leaving both countries weak and vulnerable.
Like I said some intersting thought provoking points, read it and see what you think.
Perhaps another answer is that the war against Nazi Germany was worth the cost and then we should have battled Stalin and pushed him out of Europe, the Ukraine and the Baltic countries when we still had the advantage of the jet engine, the atom bomb and large Allied Armies already mobilised in the field with combat experience (with perhaps many German volunteers) The Soviet Union defeated in 1945 means no cold war?