I am honestly not sure what happened to this story. First off the main character is supposed to be called "the machine" as in he doesn't do any mission without carefully planning it out and having a plan "B", plan "C", etc. Whereas in this story he races off to North Korea without any preplanning, then he races off to China, then he races off to North Korea again - all without a plan even considered.
Lastly the second trip to conclude the book (no spoiler) - was complete garbage. It didn't make sense, it wasn't logical, it didn't even seem very hard. Come on! we are talking about directly challenging some of the most crazy people in the world....any you simply tricked them with technology that previously the author had said didn't work there.
Not worth reading.