Kindle. This is the weakest from Ackerman I've read yet. It's nothing like his earlier work, except perhaps in the prose being even more pedestrian. I guess he read a book from the first Cold War and figured that we needed an Our Man in Constantinople or The artist who didn't come in from the cold. The city and its subcultures provide only local colour; the only rounded-out character here is Murat, and that's because he's a two dimensional, non-violent Michael Corleone-esque business guy. Plot-wise Ackerman thinks he's got it figured out like Smiley would, but it wouldn't take much imagination for Cat to return home at any point to fetch her and her son's passports; she could depart for the USA while her husband is out one day, and I doubt the embassy could interfere much. The reveal at the end is entirely predictable given the concussive repetition and closededness of what comes before.
Joan Silber talks it up. Perhaps this shadowboxing is something for Americans to wring their hands over.