I'm trying to identify a story about a conflict fought using time manipulation.
- One detail I think I remember correctly is about trapping some kind of a leader or general in a sphere altering time flow, said general would die due to some kind of sickness (cancer?).
- I believe there was also an undercover agent/spy meeting someone at a ball or party.
- There might have been something similar to MAD strategy, where time altering devices were placed along the border, ready to be activated on the first sight of enemies approaching, although I'm not sure about this part.
- I'm pretty sure I've heard this story in audio-book format in Polish, maybe a year or two years ago.