This photo taken on Sept 20, 2018 and released by Korean Central News Agency (KCNA) via KNS shows the Democratic People's Republic of Korea (DPRK)'s leader Kim Jong-un (right) talking to the Republic of Korea (ROK)'s President Moon Jae-in during a visit to Samjiyon guesthouse near Mount Paektu in Samjiyon. According to ROK's Blue House, Kim sent a letter to Moon on Dec 30, 2018. (KCNA VIA KNS / AFP)

SEOUL — Kim Jong-un, top leader of the Democratic People's Republic of Korea (DPRK), sent a letter Sunday to the Republic of Korea (ROK)'s President Moon Jae-in, according to Moon's office Blue House.

In the letter, Kim said the leaders of the two Koreas met three times this year and took substantive, bold measures that go beyond old confrontations.

Kim expressed his willingness to frequently meet with Moon next year to advance discussions on peace and prosperity of the peninsula and resolve the peninsula's denuclearization issue together

According to ROK's presidential spokesman Kim Eui-keum, the DPRK leader said that through those measures, the two Koreas deviated from the fear of war and the military tensions.

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Kim proposed to Moon to work together next year for peace and prosperity on the Korean Peninsula.

Moon and Kim held their first summit meeting in April at the truce village of Panmunjom. During their third summit in Pyongyang in September, defense chiefs of the two Koreas signed a comprehensive military agreement to defuse military tensions and prevent accidental clashes.

The DPRK leader promised to visit Seoul at an early date after the Pyongyang summit, and ROK's Moon expressed his hope that the visit would be made before the end of this year.

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Kim said in the letter that he was sorry his trip to Seoul did not take place this year as agreed upon.

According to the Blue House spokesman, Kim showed his strong willingness in the letter to visit Seoul while closely monitoring what would happen in the future.

Kim expressed his willingness to frequently meet with Moon next year to advance discussions on peace and prosperity of the peninsula and resolve the peninsula's denuclearization issue together.