the problem of territory

 These days, I'm interested in the problem of territory between Japan and China. Both countries insist on their authority to preserve Senkaku islands. Japanese people think they belong to Japan, but Chinese people also think they belong to China. Last month, I often watched a protest demonstration in China on TV. Chinese people were filled with emotion and very violent. In addition, China runed an ad in The New York Times to dominant Senkaku islands. I don't know why they do such things. On the other hand, Japanese government is optimistic about this problem. It is responsible to take a optimal measure to conserve Senkaku islands, otherwise China perhaps take more large-scale steps. Anyway, Japan should make efforts to obtain them.