Leonard Mosley's landmark history of the Western Oil Companies and their relations and interactions with the Oil States of the Middle East is an impressive achievement, especially being published just as this world of oil, politics, and power was changing. Published in 1973 as OPEC was about to emerge as a critical player in world oil markets, the author was able to draw upon the memories and memoirs of many of key players in the previous century's development of Middle Eastern oil. With experience as a journalist, novelist, and historian he was able to talk to oil roughnecks, western financiers, sheikhs, oil ministers, etc. to present a well rounded look at how this industry and the region grew and developed. However, written and published over a half century ago, there are aspects of the book that are out of date especially in some of its treatment of the emerging oil states. But whatever flaws you might find in this book, anyone interested in how our world's relationship with oil developed needs to read this book.