This would make for a fun scifi plot, from the perspective of Jupiter natives. "These assholes from Earth dropped a nuke from orbit. They appear to be preparing to do the same to our cousins on Saturn. What do we do now?"
I was picturing a large number of classic flying saucers with domed tops rising en masse from the surrounding clouds, pointing themselves towards earth, and speeding away. I mean, we did just drop a bus on them.