That would not surprise me at all. The Dutch government also considers Japan to be “West”, but not South Korea, but it does Indonesia as a former Dutch colony,

That would not surprise me at all. The Dutch government also considers Japan to be “West”, but not South Korea, but it does Indonesia as a former Dutch colony, but not Suriname. The terms “Western” and “Eastern” seem more than anything be based on race, not on actual cultural similarities. — Perhaps these existed a century back, but after the Chinese cultural revolution and the U.S.A. occupation of Japan, I do not believe Chinese culture to be closer to Japanese culture than Japanese culture to be U.S.A. culture. If anything, the older division of communist vs. capitalist states made more sense. Though that difference too is shrinking with many officially communist states having incorporated a fair deal of free market, and many technically capitalist states having extensive government market direction into what is some call “social democracy”.