Red October (fictional submarine) the "Red October" adventure proved useful to Ryan's career. In later books, Ryan is able to use his heroism in obtaining the submarine as a lever with which to force a threatening KGB Secretary to defect to the U.S. against his will (in the novel "The Cardinal of the Kremlin"), ending the possibility of a Kremlin coup against a politically centrist Soviet government. Years later the truth of these events comes to light when political opponents of then-President Jack Ryan reveals his part in the affair. By this time in the early 1990s, the Soviet Union has collapsed and the
The Hunt for Red October novel as "the most satisfactory novel of a sea chase since C.S. Forester perfected the form". Due to an extensive marketing campaign by the Naval Institute Press for their first published work of fiction, which was initially aimed on the military, the book sold 45,000 copies by March 1985. Clancy said in a 1991 interview: “I thought we’d sell maybe five thousand or ten thousand hardcovers and that would be the end of it. I never really thought about making money.” After Reagan's endorsement, "The Hunt for Red October" topped the national bestseller lists, particularly "The New York Times". It