I can think of another country, not mentioned in the article, about which Russia might have concerns. It’s between Japan and China.
When did the Russians NOT have missiles aimed at China?
China and Russia have always been uneasy allies, going back to the disagreements between Stalin and Mao Ze-dong. Each thought the other was trying for full control of the Communist ideology and hegemony over the rest of the world.
They were both right, for what that’s worth. One mountain isn’t enough for two tigers.
That country isn’t a threat to Russia.