Kim’s comments published by North Korea’s state media on Wednesday came after months of frustration in the North over the South’s refusal to defy U.S.-led international sanctions and resume South Korean tours at the site. Lee Sang-min, spokesman of Seoul’s Unification Ministry, said North Korea sent letters addressed to South Korea’s government and the Hyundai business group demanding that the South Koreans come to Diamond Mountain at an agreed-upon date to clear out their facilities.