This book had an excellent start with a very intriguing and exciting cold open. Overall, it is a good book with loads of detail and international intrigue. The main problem, for me, is that it was just too needlessly long.
Also, there was very little way in the way of characterization. Everyone had a distinct personality, but there was very little nuance to those personalities, and we got very little in the way of their inner thoughts. Much of the dialogue was also very cliched and repetitive. We get it: You don't like Lady Windemere, and you think the main terrorist is a "fiend".
It had loads of minute plot detail, but it got very samey after a while, and I was itching for it to end by the time I got to page 400 but had over 180 pages to go. Yeesh! It got to be a letdown after such a strong opener.
However, I liked the ending. It was perhaps a little silly how the main baddie got his comeuppance, but I didn't mind. Overall, it is an OK book, but it could have done with judicious editing of the more repetitive elements to shorten it a good bit.