Their Finest Hour concerns itself with 1940. France falls, and England is left to face the German menace alone. Soon London is under siege from the air--and Churchill has a few stories of his own experiences during the Blitz to share--but they persevere to the end of what Churchill calls "the most splendid, as it was the most deadly, year in our long English and British history." They press on in The Grand Alliance, liberating Ethiopia from the Italians and lending support to Greece. Then, when Hitler reneges on his non-aggression pact with the Soviet Union (the very signing of which had proved Stalin and his commissars "the most completely outwitted bunglers of the Second World War"), the Allied team begins to coalesce. The bombing of Pearl Harbor by the Japanese makes the participation of the United States in the war official, and this is of "the greatest joy" to Churchill: "How long the war would last or in what fashion it would end no man could tell, nor did I at that moment care. Once again in our long island history we should emerge, however mauled or mutilated, safe and victorious."