Changes

*''Clear and Present Danger'' (1989) - Central America and drugs are the focus - distrust of reporters and politicians is a theme.

*''Clear and Present Danger'' (1989) - Central America and drugs are the focus - distrust of reporters and politicians is a theme.

*''The Sum of All Fears'' (1991) - [[Israel]] loses a nuke, which is then used by terrorists on an American city. While the main villains are the terrorists, the secondary villains are the liberal presidential administration that seeks to marginalize the US military and foolishly ignores the advice of the more level headed (i.e. - conservative) officials who counsel caution despite the "end" of the Cold War and nearly cause disaster yet again due to their foolish political decisions.

*''The Sum of All Fears'' (1991) - [[Israel]] loses a nuke, which is then used by terrorists on an American city. While the main villains are the terrorists, the secondary villains are the liberal presidential administration that seeks to marginalize the US military and foolishly ignores the advice of the more level headed (i.e. - conservative) officials who counsel caution despite the "end" of the Cold War and nearly cause disaster yet again due to their foolish political decisions.

*''Without Remorse'' (1993) - Details origin of the character [[John Clark]], and is set during the [[Vietnam War]].

*''Without Remorse'' (1993) - Details the origin of the character John Clark, and is set during the [[Vietnam War]]. The book also contains many themes addressing the ruthlessness and brutality involved in the domestic illegal drug trade.

*''Debt of Honor'' (1994) - what if [[Japan]] invaded a US island? (ends with a 9/11 style attack on the US Capitol).

*''Debt of Honor'' (1994) - what if [[Japan]] invaded a US island? (ends with a 9/11 style attack on the US Capitol).

*''Executive Orders'' (1996) - continues where ''Debt of Honor'' left off, with Jack Ryan bumped up to President of the United States, just in time to deal with a new threat in the Middle East. It also features many corrupt liberals as enemies, who oppose the new [[conservative]] government, and who use many extralegal means throughout the book to topple the new President's conservative reforms. Further, the book addresses how liberals have corrupted the US tax code to their own benefit and how similar corruption in the American legislature allowed abortion to become federally protected.

*''Executive Orders'' (1996) - continues where ''Debt of Honor'' left off, with Jack Ryan bumped up to President of the United States, just in time to deal with a new threat in the Middle East. It also features many corrupt liberals as enemies, who oppose the new [[conservative]] government, and who use many extralegal means throughout the book to topple the new President's conservative reforms. Further, the book addresses how liberals have corrupted the US tax code to their own benefit and how similar corruption in the American legislature allowed abortion to become federally protected.