US Navy options for the future--probably stating the obvious.

[ECSNorway]

I recall a Heinlein story that ended up with using mass drivers on the moon to destroy, among any capacity of Earth's major forces to get stuff into cislunar space, more or less every major Earth landmark.

The Moon Is a Harsh Mistress - the first Heinlein and the first adult SF I ever read.

I suggest you go re read it, KJ.  because with certain exceptions (Norad Spacecom) that assumption is wrong.  In fact, when they are talking about their target selection, the criteria is "Maximum instructive Schrecalect with minimum actual damage" 

Which still ends up being pretty nasty. I recall (It's been a while since I read the book myself) that they publicly announced the time and location of the first impact, picked a site way out in the middle of nowhere to minimize potential casualties while demonstrating their ability to hit accurately -- and being horrified when tens of thousands of tourists went to see the impact and were obliterated in the blast. Which carnage the Earthside authorities promptly blamed on them.
--
Sucrose Octanitrate.
Proof positive that with sufficient motivation, you can make anything explode.