North Korean leader Kim Jong Un said in a personal letter to South Korean President Moon Jae-in that he would like to meet “frequently” in 2019, Blue House spokesperson Kim Eui-kyeom said on Sunday.

But the announcement of the two-page letter came as it appeared definitive that Kim Jong Un would fail to visit Seoul before the end of 2018, a commitment Moon previously said Kim had made during September’s Pyongyang summit.

“Chairman Kim expressed regret for not making his trip to Seoul although he had looked forward to making his trip this year as agreed by the two leaders in Pyongyang,” spokesperson Kim said