Why would they send anything? They sold them the mercenaries, Russia needs to arrange the rest.
The aoldiers will be paid as north Korean soldiers meaning a few dollars per month, the signing bonus and actual monthly salary Russians pay their mercenaries is pocketed by the Kim family.
In the Netherlands we also had a specific windfarm canned because they could not mitigate the impact on a specific NATO radar system. There was an option to put a high tower for the radar system, but these windmills are so damn huge.