The leaders of North and South Korea announced a wide range of agreements Wednesday, which they said were a major step toward peace on the Korean peninsula. But the premier pledge of denuclearization contained a big precondition: North Korean leader Kim Jong Un said he'd permanently dismantle his main nuclear complex only if the United States takes corresponding measures.

Here & Now's Jeremy Hobson speaks with Jean Lee (@newsjean), director of the Center for Korean History and Public Policy at the Wilson Center.