Again I remember a sci-fi novel where a war involved changing the trajectories of asteroids to impact a planet, some were even aimed by attached booster rockets.
Imagine some nation with the ability to launch rockets into space, land on a nearby orbiting rock and the make it change course to strike a specific part of planet Earth.
Do you remember the name of that novel?
Better yet is “The Moon Is A Harsh Mistress” by Robert Heinlein. The “Loonies” (inhabitants on Earth’s Moon) rebel against an oppressive Earth Gov. & plunk the Earth with steel jacketed 100 ton boulders launched by magnetic catapult.
Great read: That book did more to make me a conservative back in my late teens than anything my parents could have done or said.
Wouldn’t it be easier to drop a bomb?