Bad move on Japan’s part.They’ve failed to understand that China and Russia are philosophical soul mates and will,when push comes to shove,support each other.Japan would be much wiser to mend fences with South Korea and then form an alliance with them.
A case can be made that geopolitical realty usually trumps ideology. Even when both nations were committed to the worldwide victory of the proletariat, Brezhnev and Kosygin sought capitalist USA’s acquiescence in a nuclear strike on China. I suspect Russia, just the same as in 1969, sees China as a potential mortal danger next door.
CK are right. China and Russia are as much soulmates as Stalin’s USSR and Hitler’s Germany.