Ultra-right Russian problem.
US and British intelligence uncover details about what the likely future head of Russia is going to get up to if he gains power, and it isn't pretty, and perhaps a little bit prophetic.
Not being to do anything about it through official channels, a group of influential westerners, including an ex-intelligence chief seen in a previous book try and work out what they can do about it, before it is too late - as this man is brutally removing all their sources at hand.
They hit upon the man they think is right for the job, and convince him to get to work.
Certainly not one of his best.