Theoretical challenges for flavor physics

We discuss some highlights of the FCC- $$ee$$ flavor physics program. It will help to explore various aspects of flavor physics: to test precision calculations, to probe nonperturbative QCD methods, and to increase the sensitivity to physics beyond the standard model. In some areas, FCC- $$ee$$ will do much better than current and near-future experiments. We briefly discuss several probes that can be relevant for maximizing the gain from the FCC- $$ee$$ flavor program.