A Preponderance of Power
by Melvyn P Leffler
This book is really going back to the seeds of the Cold War and what Leffler sees as the tragedy of the Cold War. He asks the very important question: was the Cold War actually avoidable? He looks at whether there were moments between 1946 and the early 50s when we could have stepped back from the brink and had some kind of modus vivendi with the Soviet Union instead of having this confrontation.