The Honor Harrington series by David Weber might be of interest. A lot of the strategy revolves around how hard patrolling, monitoring, and communicating (due to the time delay) in space is, and there is a good bit of politics as well.
It's literally my favorite science fiction. I also recommend purchasing and reading at least the first half of the series. The latter half of the series go into a lot more political fiction instead of science fiction but it's definitely worth reading if you like the political story that develops in the middle of the series.