The human rights record of North Korea is extremely difficult to fully assess due to the secretive and closed nature of the country. The North Korean government makes it very difficult for foreigners to enter the country and strictly monitors their activities when they do. Even aid workers are subject to considerable scrutiny and excluded from places and regions the government does not wish them to enter. Since citizens cannot freely leave the country, it is mainly from stories of refugees and defectors that the nation's human rights record has been constructed. The government's position, expressed through the Korean Central News Agency, is that North Korea has no human rights issue, because its socialist system was chosen by the people and serves them faithfully.