North Korea officially denied sending arms during the Ukraine war to Russia, or planning to do so. Putin must be more deranged than Kim Jong-Un is, when even Kim Jong-Un does not want to put into a basket together with Putin.
Far right assholes are everywhere the same. Swedish Nyadagbladet, a far right web magazine and anti vaxxer supporter, published a supposed document by RAND corporation.
Its topic: how to sabotage an axis France-Germany-Russia and get European money in America. This supposed leak is so riddled with errors, that it is clearly a fake. Also RAND corporation denied authorship as well.
So this is most likely Russian propaganda. If you want to have a look at such a thing, read the article.
Linux basically powers 99.9% of the worlds top 500 super computers, and has been the preferred operating system of them since at least 15 years or something. Also every Android smartphone is basically Linux.