https://www.welt.de/politik/ausland/...he-Rakete.html
I recommend to use a translation bot for this. The article explores the question where the hgeck NK did get such a missile, and how it was able to score such a successful (!) series of tests in such a short ammount of time. It is unlikely that it was capable to develope this by itself, so it must have bought it, at least major parts of it. It could be that the Chinese or Russia equip NK in order to enable it to form a military threat to the US. Both countries' interests for that are obvious. It could be India to install NK as a nculear player against China. It could be Iran. The missile program of NK has ties with all these countries, and latest hardware spotting reports show new hardware from these countries being used for NKorean missiles and missile carriers.
Including technology produced from European companies.
The Chinese can and should not be trusted over NK. I am convinced they play a double game when pressing NK. A second military threat to the US in the region is in their best interest.