NEW : Russian Foreign Minister Sergey Lavrov denies the visit is worth a comment . Russian Prime Minister Dmitry Putin visits Okinawa Island , near Japan 's island of Hokkaido . Kunashir is one of the Kuril Islands , which Russia considers part of its Sakhalin region . Japan calls the visit ` ` wrong '' The islands have been a subject of dispute between the two countries since World War II .
NEW : Russian Foreign Minister Sergey Lavrov denies the visit is worth a comment . Russian Prime Minister Dmitry Putin visits Okinawa Island , near Japan 's island of Hokkaido . Japan calls the visit ` ` wrong '' The islands have been a subject of dispute between the two countries since World War II .