[hoosiermama]

Where do they get people educated in these areas?

[TigerLikesRooster]

They had exchange programs with Russia and China until recently in which N. Korean specialists learn about nuclear technology and other stuffs, ostensibly not related to anything military.

There could be occasional technical consulting from these countries, too.

[caww]

When Soviet Union fell their nuclear scientists etc. needed a job so N.Korea took some of the on....I suspect they taught them but also knew the underground and peoples to stay connected with them since that time....

Also Iran’s in bed with N.Korea.