President Trump's newly-appointed special envoy for North Korea is due in Seoul in the coming hours.
Stephen Biegun's first diplomatic trip to South Korea will run through Wednesday.
Seoul's foreign ministry said earlier that Biegun will meet on Tuesday morning with South Korea's Foreign Affairs Minister Kang Kyung-wha and his South Korean counterpart Lee Do-hoon.
The South Korean diplomats will brief him on the latest developments, including the results of the special envoys' trip to Pyongyang last week.
The visit comes at a crunch time as South Korea's latest push for the North's denuclearization seems to be gaining traction.
Biegun will also make stops in Beijing and Tokyo before returning to the U.S.
