As I've mentioned before, I wasn't fond of Tom Clancy's politics, but he did write darn good thrillers, especially IMO before he started really letting his politics bleed into them, as in the spin-off Jack Ryan Jr series.
Rainbow Six is the second of his books that features the somewhat mysterious John Clark, rather than Jack Ryan (either Jack Ryan). It has dropped to $1.99 at Kindle and Kobo US right now. My memory from reading it many many years ago in DTB was that it was pretty good, and not so much politics as to drive me nuts...of course, YMMV...
Kindle US:
https://www.amazon.com/dp/B001Q9J4PG
Kindle US/Smile:
https://smile.amazon.com/dp/B001Q9J4PG
Kobo US:
https://www.kobo.com/us/en/ebook/rainbow-six