[quote=@Willy Vereb]
<Snipped quote by Sigma>I thought more along the lines of an intelligent killsat system striking the origin nation of the nucelar attack. That sounds even more like a deterrent. Of course the advanced sensors and AI make it virtually infallible in its judgement (so by storyline purposes it never makes mistakes). It sounds like a terrible enough deterrent that after the first few failures worldwide nobody is crazy enough to work on WMDs in this setting.


[/quote]

So did the people of each nation get a random letter saying "if you build a nuke I swear i'll kill you all" sorta deal? Maybe there's just a well known don't do it because humanity will be destroyed next time mindset. Orbital killsat's would easily enforce that. 

And willy, get your NS up.