From "The Analyst" (Military & Strategic):

NORTH KOREA SENDS ENGINEERING TROOPS TO RUSSIA

The latest statements from Russia and N.Korea suggest that, following a a statement from Pyongyang, an engineering division is to be sent to the Ukraine front to support Russian forces. In exchange Russia is said to be providing long range missile technology to Pyongyang.
This is unlikely to be something the Chinese approve of, they cannot abide it when N.Korea manages to get outside of its box and their influence over it is superseded by Russia. This is not how the Chinese like to do things and will be causing them considerable disquiet. They like things done on their timetable not someone else’s.
Putin of course knows all this. He’s playing a careful game and reminding the Chinese that while they may think they have him by the economic short and curlies, he is still more than capable of wielding his own power regardless of Chinese leverage, if not in spite of it.
China is increasingly afraid of N.Korea going too far, possibly even triggering a conflict with an increasingly twitchy S.Korea, which is already moving quietly to an early but still low stage of readiness.
All of this comes as an increasingly desperate Benjamin Netanyahu of Israel, trying to stay in power to avoid prosecution for corruption, looks to be set on an offensive against Southern Lebanon and Hezbollah. This will not be a pretty conflict and it seems almost inevitable. There has long been a feeling in Israel that Hezbollah ‘needs dealing with’ sooner rather than later.
Things are getting tense.