Disappointing book, but some redeeming factors.
Part of this may have been my expectations, but I expected a more rigorous analysis of the strategy/grand strategy given the title. What is given, for the first half of the book, are mini-biographies of the Five. On top of that, there is a lot of psychoanalysis during the first half of the book too, which I don't care for, especially in a book about great power politics and grand strategy.
The second half does delve into the strategies, though I found it to be lacking in really insightful analysis. I've read much of this in other books. And even in the second half, there's a lot of psychoanalysis that is out of place. But here are the pros.
Pros:
-The book is very readable. O'Brien writes well. Some history books can be laborious reads (or listens even) if the author isn't able to keep things interesting (sometimes a history book has to be "boring" but with this topic, it didn't have to be, and O'Brien delivered on this count.
-There is good analysis of Roosevelt's strategy in particular. There are some good anecdotes throughout on all Five at points, but I think O'Brien has some blind spots that could have made the analysis much better. Because the topic of this book is a good one. It's an interesting study which I would like analyzed. If O'Brien or someone ever perhaps wrote an extended version of this book/topic, maybe with some other historians' opinions, this could be a fantastic, insightful book.
Cons:
-Analysis of Churchill, Hitler, and Stalin. I don't like how these guys were covered in this. I feel it misses the mark. A lot of the analysis seemed outdated or narrow. For example, O'Brien diagnoses Stalin as the Worst-Best-Worst strategist. By this he means that Stalin's early grand strategy (and battlefield strategy was the worst of the five, arguably with Mussolini). Then Stalin became the best from 1941 onwards, then BECAME the worst again because he chose to launch a Cold War he couldn't win.
I know it's very easy to judge things in hindsight, but in a book like this I think you HAVE to try to view things from the leaders' perspective. Just because 1989 happened doesn't mean the strategy was poor. Especially since Stalin died in 1953. I think Stalin was probably the best strategist from 1943 to 1945. This is fair. However, I would have liked some real analysis of why Stalin's strategy prior to 1941 was terrible. Yes, I know that Barbarossa happened, but why did it happen? Why did the Germans advance so far? Was this because of bad strategy on Stalin's part, or did he come close to a masterstroke and Hitler just beat him to the punch?
O'Brien says Stalin gave Hitler the means to assault his Soviet Union by signing the Pact with him. But why did Stalin do that? Example: no military analysts of the time thought that France would fall in six weeks. No one. France falling so quickly did not factor into Stalin's calculus and had France held out longer, bled the Germans more, or straight up stopped them like in WWI, Stalin would have been able to attack Germany whenever it liked while the German forces were divided. So I don't think Stalin was a bad grand strategist because he calculated France would put up a stiffer fight than she did. It could have easily been a masterstroke. And I know that it doesn't really matter what could have been, it matters what it is, but given that literally no one thought France would collapse in six weeks, I think one has to at least understand WHY Stalin signed that pact.
I also think the conclusion that the Soviet Union could not have won the Cold War that Stalin launched (I'll agree he launched it, but he had reasons) a very loaded claim. Why? Why couldn't the USSR win the Cold War? What if the Sino-Soviet Split didn't happen? What if the USSR and China were able to cooperate? Maybe we end up in a world where the USA is a garrison state surrounded by a Red World. I think that's a grandiose claim to make, and in addition, it doesn't account for the fact that Stalin was a committed Marxist. He wasn't going to sit back and be content with being Roosevelt/USA's junior partner if he could help it. A world revolution was waiting.
When it comes to Hitler, the analysis is really uninspired. It's a lot of psychoanalysis which I again don't care for, particularly in a military study (if I want psychoanalysis of Hitler I can read Ian Kershaw or Robert G.L. Waite). I really don't understand why historians want to paint Hitler as an incompetent, egotistical buffoon. Okay, let's say that's all true. How on earth did it take the three world superpowers so long to beat this guy? They can't have been so brilliant in that case. Anyway, all of the brilliant maneuvers and victories Germany had in WWII are never attributed to Hitler by O'Brien, but all the defeats are chalked up to him and there's no explanation for this.
Why? Hitler certainly made several strategic mistakes but O'Brien paints him as totally incompetent. Obviously he wasn't. You don't take out France in six weeks (despite being outnumbered) and reach the Gates of Moscow by being lucky (it's like saying Napoleon was a bad strategist because he eventually lost) (Note: Napoleon was obviously a better strategist than Hitler, just making a point). And a lot of decisions that seem poor in hindsight or aren't properly analyzed crop up in this book. For example, O'Brien just casually throws out that Hitler's decision to split his forces to take the Ukraine during Barbarossa rather than drive on Moscow with his full force was incredibly stupid and a result of Hitler's bad preconceptions of war and his ideology. Okay, what happens if the Soviets outflank you from the Ukraine since you haven't mopped them up down there and you have this huge salient going toward Moscow? I would have liked further analysis as to WHY this was a bad decision rather than just saying "this was a bad decision" because I'm not sure it was.
A large part of the reason the war did go on so long that the Allies were the ones repeatedly underestimating Hitler rather than the other way around. It's said that the Germans horribly underestimated the Soviets. Okay, sure, but you don't get 20 miles from the Kremlin by "underestimating" your enemy. Obviously, thorough enough preparations were made to get them there and had the weather been fifteen degrees warmer, who knows what would have happened?
With Churchill, I would just like some analysis as to why Churchill continued a war (O'Brien says Churchill's goal was to maintain the British Empire) that was certain to doom the Empire? Why was Churchill in an alliance with the two most anti-imperial countries on earth at the time (the USA and USSR).
-In general there's a lot of Monday Quarterbacking in this book, which is not what you want to see. There were some obviously bad decisions made in WWII, some of which O'Brien identifies. Mussolini invading Greece stands out as one that was poorly conceived and poorly executed. But a lot of decisions that Stalin, Hitler, and Churchill made should have had deeper analysis, rather than just dismissing some of their decisions or in some cases just accepting some of their decisions.
Readable enough book, not particularly insightful analysis, leaves the reader wanting.