As a movie, it is OK, actually one of Afflec's better efforts. However, apparently the writer of the screenplay read a different book than I did, because "The Sum Of All Fears", the movie, had about 3 things in common with the book: The name, the main characters, and the fact that it involved nuclear weapons. Why change from Denver to Baltimore? The relationships between Ryan and most of the other characters is scrambled up. Neither Afflec nor Harrison Ford got the character of Jack Ryan right (Ryan is NOT an action hero, he is a deep thinker with a giant inferiority complex who still ...