VYO, and Libsmasher, lets keep this one on topic.
As for the claims for the book in question, I will not pass to much judgement until I would have the chance to read it myself. It certainly goes against what I believe the cause of the war was, but either way, Churchill was an important figure, among the top 3 most important figures on the allied side.
He is a great leader, and among my most admired historical figures, speakers and authors. But it took a heck of a lot more than Churchill to defeat the Nazis. In many ways, if it wasnt the blunders Hitler made things might have turned out different.
Also, despite the well deserved demonization of Stalin, the role of the Soviet Union is often underplayed in America when it comes to allied victory.