I prefer the other.
I started reading this then switched to the The Bureau and the Mole (should be called Freeh and Hanssen) by Vise and found I liked his style better. Having read both, I find this an easier read but a bit male-bashing and female-glorifying - no doubt a reflection on the authors. I find this effort more hurried than Vise with more superficiality about Hanssens' motives. Interestingly, the SVR were VERY concerned about the cross-agency molehunt in Hanssen's July 31st 2000 commo. Is there still another high-level mole at work ?