The U.S. and Japan will push for the “complete denuclearization” of North Korea, President Donald Trump and Prime Minister Shigeru Ishiba said on Friday as Trump touted his rapport with DPRK leader Kim Jong Un amid Pyongyang’s repeated refusal to give up nukes.

During their first summit in Washington, Trump and Ishiba “expressed serious concerns over and the need to address the DPRK’s nuclear and missile programs and reaffirmed their resolute commitment to the complete denuclearization of the DPRK,” according to a joint statement published by the White House after the talks.