Short answer: Everybody.
China, Russia, and Iran all provide money, technology, hardware, raw materials, etc. South Korea provides money in the form of employing workers in an "enterprise zone". Even the US has been supplying them with oil, food, and a nuclear reactor. Any and all aid to this regime is fungible. Fungible aid finances their nuclear program.
China, Russia, and Iran...
Perhaps it's worth noting that Hillary Clinton gave Russia 20% of the uranium produced in America.
I guess it would be reasonable to add us to that list.
Oh.
Even the US has been supplying them with oil, food, and a nuclear reactor.
We're there.
nvrmnd
why not do not have to have a war with us to fight us, fight korea..
I say if it goes nuclear, hit china, pakistan and russia too..