Published: Aug. 16, 2012 at 8:07 AM

TOKYO, Aug. 16 (UPI) -- Japan has detained 14 Chinese activists who evaded the coast guard to land on a tiny group of contested islands in the East China Sea.

Controversy over the islands has been blamed on potential oil and reserves in the region and on fishing resources, but actually originated with the end of World War II, the International Herald Tribune reported.

The islands are claimed by Japan, China and Taiwan, with each nation calling them by different names. To Japan, they are the Sensaku. To China, they are the Diaoyu.

The activists, who had sailed from Hong Kong, slipped onto the islands Wednesday and planted the Chinese and Taiwanese flags, setting off the latest controversy. However, the issue of who owns the islands dates back to 1945 when Japan surrendered to Allied powers. The treaties it signed set up post-war conditions that Tokyo would have to live by, but left unsettled smaller matters such as who controlled the islands that lie between Japan and China.

Japan is in a similar dispute with South Korea over the Dokdo islands, or Takeshima as they are known in Japan, another thorny leftover from the war.

"The sense of victimization at the hands of the Japanese remains a powerful sense of identity," said Daniel C. Sneider, associate director for research at the Shorenstein Asia-Pacific Research Center at Stanford University. "In Korea the feeling is: 'We were the victims, and that's it.' "

South Korean President Lee Myung-Bak visited the Dokdo islands last week, setting off a three-way diplomatic row. Japan recalled its ambassador from Seoul, while a state-run Chinese newspaper, the People's Daily, said relations between Japan and China were now at "the freezing point."

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Islands row picks at WWII political scab