The letter extended the greatest glory and heartfelt thanks to him who successfully led the test-fire of intercontinental ballistic rocket Hwasong-14 at one go.

It praised him as protector of the destiny of the country and nation and the greatest man who is exalting the dignity of the political and military power of Paektu all over the world and steering the world politics.

The Chongryon officials and Koreans in Japan will defend Kim Jong Un and their homeland, beacon of hope, with high honor of being overseas citizens of Juche Korea, the letter said.

It expressed their will to further develop the movement of Koreans in Japan on a higher stage as required by the new era of the Juche revolution and fulfill their noble mission for vigorous nationwide drive for national reunification.

Chongryon will make tangible contributions to the building of a socialist power in the homeland which is working new miracles in the spirit of self-reliance and self-development and at Mallima speed, the letter said.