U.S. special representative for North Korea Sung Kim will make a three-day visit to Tokyo from Wednesday and take part in a trilateral meeting involving his Japanese and South Korean counterparts, the State Department said Friday.
Pyongyang is believed to have completed preparations for what would be its seventh nuclear test and first since September 2017, and there is speculation it could go ahead with it soon.
Kim, Japan's Takehiro Funakoshi and South Korea's Kim Gunn will discuss their continued "joint efforts to achieve the complete denuclearization of the Korean Peninsula," the department said in a press release.
The trilateral meeting "underscores the importance of ongoing close U.S. collaboration" with Japan and South Korea on North Korean issues and the "ironclad U.S. commitment" to the security of the two U.S. allies in Asia, it also said.
U.S. National Security Adviser Jake Sullivan and his Japanese and South Korean counterparts also discussed North Korea on Thursday in Hawaii and reportedly agreed to take resolute steps in the event of another North Korean nuclear test.