The national liberation was the outcome of the great anti-Japanese war led by President Kim Il Sung to defeat the brigandish Japanese imperialists through all-people resistance with the Korean People's Revolutionary Army as the core force.

The anti-Japanese armed struggle organized and led by the President was a revolutionary struggle that gave origin to the national liberation revolution in colonies under the banner of independence for the first time in history.

At the historic Kalun meeting in Juche 19 (1930), he clarified the original revolutionary theory that the Korean people are responsible for all the problems arising in the revolution and should settle them independently in conformity with the actual conditions of the country. Later, he clarified the Juche-oriented stand on several occasions that they should liberate the country by their own efforts, and consistently maintained this stand in the whole period of the anti-Japanese armed struggle.

He made sure that weapons and all other things needed for the anti-Japanese armed struggle were provided by dint of self-reliance as there was neither state-backing home front nor support from a regular army. He created the ways and tactics of the anti-Japanese armed struggle in an original way on the basis of the actual conditions of the country and always won victories in battles against the Japanese imperialists who styled themselves "invincible imperial army".

The historic victory in the anti-Japanese armed struggle showed to the world that if the oppressed popular masses of colonial countries wage armed struggle in reliance on their own revolutionary forces, they can defeat any imperialist aggression forces.

With this example of the national liberation revolution in colonies as an occasion, many countries and peoples under the yoke of the imperialists came to achieve their independence through armed struggle and embark on the road of building a new society.