This book...hm. It was emotionally very difficult for me to read, especially since I'm Israeli myself. It's also difficult sometimes to make sense of the author's thoughts, since he wasn't intending to write a book and has simply compiled his emails with little or no editing.
If you already know a lot about Israeli history, this book will illuminate the human aspect of all those names, dates, and numbers of people killed. But if you don't, it will be very confusing, because Gordis often doesn't explain events fully.
I'd recommend it to anyone with existing knowledge of the situation. Otherwise, you'd best start off with something more user-friendly.