The work "On the Three Principles of National Reunification", published on May 3 and November 3, Juche 61 (1972), clarifies the three principles of national reunification--independence, great national unity and peaceful reunification-- and the idea of realizing the collaboration between the north and the south of Korea.

The work "Let Us Achieve the Great Unity of Our Nation", published on August 1, Juche 80 (1991), says that the Korean nation is the driving force for reunification of the country, indicating the tasks and ways for achieving the great unity of the entire nation.