They're all more interested. I suppose they all have longer scientific research histories in the Antarctic than they do in the Arctic. They all signed the Treaty of Svalbard when it came up in the 1920s and 1930s. China signed as the Republic of China, and that was one of the treaties that the People's Republic of China kept when they took over from the Republic of China when it went to Taiwan.
They all have different interests. Korea is one of the leading countries in the world on meteorite research, and 85% of the world's meteorites hit the Antarctic. Japan and China are both there, again on polar research questions. I'm not a physical scientist; I can't comment on what the nature of the research is. But if you look at the numbers, that is where their money is allocated.
I think they would argue that experience has given them expertise, and capacity in particular—icebreaker capacity is the easiest example—to do things in the Arctic. The Japanese are particularly adamant about this. They argue that they were the first of the East Asian countries in the Antarctic; they were the first of the East Asian countries into the Arctic. They have expressed particular sensitivity at being lumped in with these other countries because they perceive themselves to have earned more than that.