Believe me, the earlier ones lead up to this ("The Hunt For Red October", "Patriot Games", "Cardinal Of the Kremlin" and "Clear and Present Danger"), and the last two ("Debt Of Honor" and "Executive Orders") are downhill. Through the earlier books, Ryan was developing from an obscure CIA academic into the hero we know. After this, he falls into the Presidency and becomes the target of political enemies. But "Sum Of All Fears" is where he's at his best. He prevails against terrorists led by a leader who's dying of cancer and has nothing to lose. With the help of his beautiful brilliant physician wife (though conservative, Clancy seems determined to avoid sexism), he prevails against a Murphy Brown clone in the Cabinet who tries to torpedo both his career and his family life. Maybe it's a bit overblown when he also saves the world from an escalating nuclear crisis and a panicky president because he's personal friends with a Kremlin higher-up, but hell, he prevails there too. If you like Jack Ryan as a Yankee James Bond who uses his mind a lot and a gun hardly ever, read this book, then press <stop>.