The foreign ministers of the U.S., South Korea and Japan reaffirmed their “resolute commitment to the complete denuclearization” of North Korea on Monday, just a day after Kim Jong Un said the DPRK will only entertain diplomacy if the U.S. abandons that goal.

U.S. Secretary of State Marco Rubio, ROK Foreign Minister Cho Hyun and Japanese Foreign Minister Takeshi Iwaya pledged to maintain close coordination on DPRK policy while “upholding the principle of denuclearization” and maintaining joint deterrence, Seoul’s foreign ministry said in a press release following their meeting in New York.