text: For historical reaons unclear to me, the Chosen Soren (the "non-governmental" North Korean Assn) has represented a substantial portion of the ethnic Koreans in Japan. In other words, these ethnic Koreans have chosen to affiliate with the North rather than the South.\n\nA third state cannot force the nationality of a first state to those whom a second state consider its nationals.\n\nJapan does not easily grant its nationality to ethnic Koreans, nor to the children born in Japan to ethnic Koreans.\n\nEssentially the problem arises from (1) Japanese national exclusiveness and the unwillingness of many Japanese to marry Koreans; (2) Japan's sorry, in fact more than sorry -- nasty and vicious --  imperial past; and (3) the inability or unwillingness of the Koreans and their offspring now in Japan to leave. (And why should they? Their ancesters were brought there during WW II as slave labor, or otherwise involuntarily. Compare the Turks in Germany whose ancestors were recruited for factory jobs after WW II, when so many German workers had died in the war. And also the pre-reversion two German (FRG/GDR) nationalities.)