Putting aside thorny bilateral issues, the Japanese and South Korean foreign ministers met Wednesday in Tokyo and agreed to "closely cooperate" on seeking an end to North Korea's nuclear weapons program, a Foreign Ministry official said.

During their meeting, South Korean Foreign Affairs and Trade Minister Song Min Soon also proposed that he and Taro Aso hold meetings as often as possible, asking the foreign minister to visit Seoul soon, according to the official who briefed reporters.

Aso said he will visit South Korea at a convenient time, the official said.