One thing wrong in the article. The terrorists in "The Sum of All Fears" were always neo-nazis, even in the book. Just changed the governments and ****ed with the timeline in Jack Ryan's life (in the movie he wasn't Dr. Ryan yet and wasn't married yet, but he was in the book, and the Soviet Union still existed in the book, yet it was the Russian Federation in the movie--although the USSR still existed after he became dr. ryan in "The Hunt for Red October.")
Um... which book were you reading? My copy has the conspiracy primarily headed by Islamic terrorists, with technical assistance from Soviet-era holdout East Germans, and stateside assistance from an "American Indian Movement" type. Not a single neo-Nazi to be found anywhere...