That is why the GEO optical telescope satellite is so important. Persistent stare at airbases over half the world.And on a bad day?
Also, for things other than the first strike, I am a bit hesitant about how resilient the space layer will be.
In the Sino-American conflict, Space will be a theater of war. LEO constellations are momentarily ahead of the opposition(mostly because of the commercial revolution), but ASAT will catch up.
Then a small constellation of MEO semi-synchronous IR telescope satellites with the sensitivity to detect jet plumes and transsonic objects flying over cold water.