Japan urges South Korea to follow a 2015 deal struck to settle the issue of Korean women forced to work at Japan's wartime military brothels in its annual foreign policy report released Tuesday.

Tokyo expresses regret about a statue symbolizing "comfort women" set up in Busan in the Diplomatic Bluebook 2017.

The report also says Japan's cooperation with South Korea and the United States is "more important than ever before" as North Korea's nuclear and missiles development has reached "a new-level threat."