Kim Yo Jong (left) hands over an autographed letter from her brother Kim Jong Un (inset) to Moon Jae-in during their meeting at the presidential Blue House in Seoul. Pics/AFP and AP

North Korean leader Kim Jong Un has invited the South's President Moon Jae-in for a summit in Pyongyang, Seoul said yesterday. The invitation, delivered by Kim's visiting sister Kim Yo Jong, said Kim was willing to meet the South's leader "at the earliest date possible", said a spokesman for the presidential Blue House.