Assuming the self-proclaimed vermin is operating from $mostly_defunct_state without risk of recourse, what would the arguments be against removing all internet routes to/from $mostly_defunct_state? (Yes, it's obvious that criminals can find ways out of that, please go deeper than that.)
Edit: Seems like the downvotes made me hit my rate limit of HN comments. Can't reply to any more comments; sorry. :(
Edit: Seems like the downvotes made me hit my rate limit of HN comments. Can't reply to any more comments; sorry. :(