This is a book about the current art of human intelligence and counterterrorism. Mr. Berntsen wrote this in an effort to make policy-makers more aware of the current efforts against terrorism worldwide. It is a simple, yet very informtative book about the topic and one, in my opinion, that not only must be read by the top brass, but by everyone. We are all part of this war.
On the Red Teaming side, this book has a wealth of information about the human condition, about working the angles, about social engineering and HUMINT. It is a great book to have in your bookshelf.