Japan is now in serious territorial disputes with all of its neighbors -- Taiwan, China, South Korea and Russia. True, this could prove there is something wrong with all of Japan's neighbors. But it could also prove that there is something wrong in the way Japan handles territorial problems with its neighbors. There is no clearer example of this than the dispute with Russia.

Russian President Vladimir Putin says he is willing to visit Tokyo this year to negotiate a much delayed peace treaty with Japan on the basis of the Japan-Soviet Joint Declaration of Oct. 19, 1956, which promises the return to Japan of the Habomai islets and Shikotan (islands at the southern end of the Kuril archipelago that were occupied by Soviet forces in 1945). But Tokyo says Putin is not welcome unless he promises also to return the two much bigger islands of Etorofu and Kunashiri nearby.

Why should Tokyo today want seriously to amend an agreement it signed and ratified almost 50 years ago? The story begins with Japan's 1951 San Francisco Peace Treaty with the Allied Powers. Article 2(c) of the treaty said unequivocally that Japan would renounce all rights, title and claim to the Kuril islands chain (Chishima Retto) and southern Sakhalin (Karafuto) -- territories to the north of Japan that Japan had controlled up till 1945. But Japan's Foreign Ministry insists that Japan never recognized Etorofu and Kunashiri to be included in those renounced Kuril islands.