I'm not worried about NK and their missiles merely because launching an object into orbit does mean you can land an object anywhere on the planet. However, ther

I'm not worried about NK and their missiles merely because launching an object into orbit does mean you can land an object anywhere on the planet. However, there's only a handful of countries that have successfully reentered objects. There's going to be lots of time to deal with NK before anyone has to worry about a nuke being launched. The biggest worry for any country is if NK or similar rogue country produced a Davy Crockett size nuclear device. I mean a few Davy Crocketts and you could turn a Cessna into a city eradicating weapon. IMO we don't need to be worried about 'rogue states' with nuclear weapons. I mean there was a big ideological difference between the USA and the USSR with a lot more nuclear weapons; there's possibly a bigger ideological difference between the USA and NK, but there's potentially a single nuke in the NK arsenal, IIRC the US doubted the NK test was actually a nuclear detonation and not simply a multi-tonne load of HE to fake it, so there might not even be a single nuke in NK.