Washington's top nuclear envoy Glyn Davies says it is time for North Korea to take steps to demonstrate its commitment to get back to diplomacy.
Davies, who arrived in Seoul Monday told reporters, he will discuss with the South Korean government ways to send a signal to the North to end all provocations.
The U.S. official is on a three-nation trip which will later take him to Beijing and Tokyo.
On Tuesday, Davies will meet with his South Korean counterpart Lim Sung-nam to discuss ways to deal with the North after last week's summit talks between Presidents Park and Obama.
The two are expected to follow up on the leaders' endorsed two-track North Korea policy of dialogue and pressure.
Davies will also meet with his Chinese and Japanese counterparts Wu Dawei and Shinsuke Sugiyama in their respective countries later this week to discuss the current security situation on the Korean peninsula.
Attention is focused on the upcoming meeting between Davies and Wu as the U.S. official said he plans to seek with his Chinese counterpart more ways to send a strong and united signal to Pyongyang that it must return to the path of denuclearization.
This will be Davies' first visit to Beijing after a major Chinese bank cut off dealings with North Korea's key foreign exchange bank which he called a "very interesting and hopeful sign" of Beijing's tougher stance on its neighbor.
The U.S. official could also raise the idea of holding trilateral talks between South Korea, the United States and China.
Hwang Sung-hee, Arirang News.