This was NOT the book I wanted to read. When I looked through the options, I was hoping for a modern biography, not a scholarly dissertation. This book wa first published in 1998, so I had high hopes, which were immediately dashed by the first sentence in the preface, which talks about the author lecturing on this subject in 1934!
Hammond constantly refers back to near-contemporary chroniclers, many of whom were Roman, and keeps dropping phrases from their work into his text. The possibility that a reader who is interested in this subject might not be able to read Latin obviously never crossed his mind.
Having said all that, the story is very interesting, and is told reasonably clearly. I didn't know anything about Philip before I read this; now I feel quite well informed.
The physical edition of the book is a total disgrace. It looks almost like a self-published book, with wayward fonts and illegible maps, obviously photocopied. Definitely not worth the purchase price.