Comment by catalogia

I'm pretty sure that only applies to ballistic missiles though. Cruise missiles probably don't show up on those satellites, and even if they did, how would you differentiate a nuclear armed cruise missile from a conventional cruise missile? There is also the matter of nuclear torpedoes, bombs dropped from planes, bombs placed by special forces (https://en.wikipedia.org/wiki/Special_Atomic_Demolition_Muni...), nuclear artillery shells (https://en.wikipedia.org/wiki/W48), recoilless guns (https://en.wikipedia.org/wiki/Davy_Crockett_(nuclear_device)), etc.