>>23450711
Other anon answered you about the massacre, you'll also want to search for the systematic gassing mentioned by other anon.
Free to you to retcon those numbers into more believable ones. IMO we must recognize the silliness, but retcon is better for the health of a franchise.

There's a story of a kid who almost managed to make nuclear breeder reactor by himself using nothing but commercially available component.
https://allthatsinteresting.com/david-hahn
It does take a lot more than having uranium to build even a fisssion bomb, as recent news should tell have told you.
And the US gave up long ago building "nuke proof" cities.

Laplace terrorist act was done on what should have been the most monitored place of the Federation, involving a conspiracy within the Federation leadership.
Believe it or not, I suspect that flying your own private nuclear-powered spaceship will require you to fill up paperwork like a flight plan, and it would have attracted attention to change your spaceship trajectory in a way that just happened to intersect Laplace long enough to accidentally drop a stealthy ball of metal cooled at 1°K to get trough detection.

It is futile to prepare for every single crazy scenario that could happen. We are barely even prepared for a war and unlike UC there's still competing countries.