A black-ops political thriller can give a writer permission to research almost forever. That is both useful and dangerous.
Good research should make the world feel solid without making the reader watch the author do the research.
There is always one more article to read, one more map to inspect, one more piece of terminology to verify, one more public document that sends you down a completely different path. Research can feel productive even when it is quietly helping you avoid writing the next difficult scene.
For Shark Protocol, I wanted enough real-world texture that the story felt grounded, but I never wanted the book to become an operations manual or a pile of facts wearing a trench coat.
I worked from public information. News reporting, maps, historical context, publicly available descriptions of institutions and equipment, declassified material where useful, and a lot of cross-checking terminology. When two sources disagreed, that was usually a sign to keep digging or to write around a level of specificity the story did not actually need.
The most important lesson was that the reader rarely needs to know everything the writer learns.
Sometimes I would spend an hour confirming a detail and the final novel would use six words from that research. That can feel ridiculous until you realize those six words are now six words I trust. The research did its job even if it stayed mostly invisible.
I also learned to separate realism from clutter. A character naming every component in a room is not necessarily more authentic than a character noticing the one thing that matters. In a tense scene, expertise often shows up in what a person ignores, what they recognize instantly, and what makes them worried.
The same applies to politics. Real systems are complicated. Fiction still needs clarity. I wanted readers to understand the stakes without needing a briefing binder beside the novel.
So the research process became a filter. Learn broadly. Verify carefully. Use narrowly.
When the research is working, I hope the reader does not stop and think, The author researched this. I hope they simply feel that the floor under the story is solid enough that they can run across it without looking down.