South Korea says it may hold direct talks with the North during a regional meeting this weekend.
Foreign Minister Kang Kyung-wha said she was willing to talk to her counterpart from Pyongyang, if the chance “naturally occurs”.
North Korea’s repeated missile and nuclear weapon tests have been condemned by neighbours in the region.
The United Nations security council is set to vote on fresh sanctions against the isolated state later on Saturday.
Foreign ministers from the Association of Southeast Asian Nations (Asean) are meeting in Manila in the Philippines.
South Korea’s Yonhap news agency reports “cautious expectations” that Kang Kyung-wha would meet North Korea’s Ri Yong-ho on the sidelines of the forum.
“If there is an opportunity that naturally occurs, we should talk,” Ms Kang told the agency.
“I would like to deliver our desire for the North to stop its provocations and positively respond to our recent special offers (for talks) aimed at establishing a peace …