Patriot Games is the first (per the blurb) or second (per
SYKM, with whom I tend to agree in this case) in the Jack Ryan series by Tom Clancy. Although I really didn't (still don't) like Clancy's politics, I have to admit he wrote some pretty darn good thrillers early on -
Red Storm Rising is still one of my favorite books, and I don't tend to like thrillers/war books. (Although the politics were always there, the politics really bled into his later books though, IMO, and so I personally quit reading his books somewhere along the way...) In any case, however,
Games has dropped to $1.99 at Kindle and Kobo US.
Kindle US:
https://www.amazon.com/Patriot-Games...dp/B001QEAQQM/
Kobo US:
https://www.kobo.com/us/en/ebook/patriot-games