The General Political Bureau (GPB) is the internal politburo of the Korean People's Army (KPA), used by the leadership of the North Korean government to exert political control over the military. The GPB is subordinate to the Ministry of Defence and operates under the direction of the Central Committee of the Workers' Party of Korea. The GPB controls units of the KPA on all levels down to company level. It primarily exerts control through propaganda, education, and cultural activities. Under directions of the State Affairs Commission of North Korea, it also controls troop movements.