The work, published on August 4, Juche 86 (1997), deals with the undying feats performed by President Kim Il Sung for national reunification and formulates the three principles of national reunification, the 10-point programme of the great unity of the whole nation and the proposal for founding the Democratic Federal Republic of Koryo as the three charters for national reunification. And it indicates the tasks and ways for realizing the cause of national reunification based on the three charters.