I think JPM makes a good point regarding increased foreign activism in Japan. Unlike the past, it seems like foreign activists are having more success (https://www.ft.com/content/fc3064ce-a1d3-4f92-91af-ca288f6a4401). The valuation and good businesses were always there in Japan and if that can be unlocked...
Buffett bought companies like Mitsubishi and Sumitomo, which are companies with diversified lines of businesses (as well as investments in other Japanese companies), almost as if he's betting more on Japan as a whole. So I was figuring maybe I should keep it simple and increase exposure to the Nikkei