The top diplomats of the U.S., South Korea and Japan pledged to maintain close coordination on the denuclearization of North Korea on Wednesday, meeting for the first time since the new government in Tokyo took charge.

U.S. Secretary of State Marco Rubio, ROK foreign minister Cho Hyun and new Japanese foreign minister Toshimitsu Motegi simultaneously pledged to “continue efforts to preserve peace and stability through dialogue and diplomacy” with the DPRK, Seoul’s foreign ministry said in a press release Wednesday.