I began reading this book for a study group last year, from which we discussed a selection of essays. I decided to read the essays that we didn't discuss, and I am glad that I did.
While some of the essays in this collection are better than others -- in fact, I was leaning towards rating this 4 stars -- the long concluding essay "The Actuality of Revolution" by the late Neil Davidson warrants giving this book a 5 star rating on its own merits.
If you're committed to revolutionary socialism as an idea and a practice, then this book, which offers case studies on the major uprisings of the past 40 years, is worthy of your time and study.