https://thediplomat.com/2018/05/the-growing-russia-south-korea-partnership/
A lot of things getting shuffled over there. Realignment seems to be in the wind.
The new government in S. Korea is all for pro-North, pro-China, and pro-anything if it fits their ingrained anti-American anti-Japanese attitude. But it is up to Putin to work on it earnestly. Up to now Russian Far East and nearby Siberia are only places where they are pumping out oil and gas, but not much beyond. The region is in bad shape economically. Russians living there slowly gravitate toward S. Korea. For example, there are regular trades between the region and S. Korea albeit on small scale. Some well-to-do Russians there go to big S. Korean hospitals for their medical treatment.