North Korean leader Kim Jong Un means to abolish all nuclear weapons, materials and facilities to achieve "complete" denuclearisation, South Korean President Moon Jae-in said on Friday.
Moon also told the BBC the North and the United States are in working-level discussions to arrange a second summit between Kim and US President Donald Trump as soon as the US midterm elections are over.
In the meantime, the two Koreas will hold high-level discussions on Monday at the border village of Panmunjom to discuss follow-up steps to their recent talks.
Moon said the North was ready to invite international experts to watch the dismantling of a key missile site and would close the main Yongbyon nuclear complex if Washington took reciprocal actions.
In the BBC interview, Moon said the actions could include opening of a US liaison office in North Korea, humanitarian aid and an exchange of economic experts.
At their summit in Pyongyang last month, Moon and Kim Jong Un provisionally agreed to resume economic cooperation, including relinking railways and roads and reopening a joint factory park and tours to the North's Mount Kumgang resort.
The latest talks on Monday will take place on the south side of the Panmunjom within the Demilitarised Zone and be led by the South's Unification Minister Cho Myoung-gyon, the ministry said, while the North has yet to confirm its delegation.
