ok and i enjoy the movie . but i also have read the book several time and and the comparison be inevitable and a several other people have do . i just do not see the point of the most obvious change from the novel represent why use a neo nazi fanatic instead of middle east terrorist . why a very young and single jack ryan instead of a married and old character . ( harrison ford would have be terrific again ) of course a scene aboard air force one be more eye candy that a president trap on camp david because of a storm and a damage helicopter . and represent where be ding chavez . a character from clear and present danger and be almost adopt by john clark after be rescue and and they work a partner . some gap on the story be too difficult to accept represent you mean that the only person able to communicate that the bomb be not russian and be a obscure junior cia adviser . what about all the agency and personnel deploy on the explosion site . be they all mute . ( on the book and ryan pass the information but he be not believe by a hostile president and his nac . sec . adviser and and a possible power struggle on the russian government be completely leave out ) . and how come that you can link without any problem from a palm in the middle of a burned city .