Svalbard is Norwegian, but has a special status
there has been a significant Soviet and later Russian presence on Spitsbergen (Pyramiden and Barentsburg), but this does NOT make Spitsbergen partly Russian.
Correct, technically it's in a Norwegian special area. By land ownership and ethnically, the second biggest town in Spitsbergen (
Barentsburg) is exclusively Russian, as is newly revived
Pyramiden.
Now there is a Chinese billionaire & arctic explorer entering Spitsbergen:
Huang Nubo wants to build the first luxury hotel (
German article). I hope he teaches the locals a lesson for this much needed upgrade of the island, but no doubt he will initially receive a xenophobic welcome ("exploitation").