North Korea: Background
A detailed site from the US State Department that provides historical, geographic, economic, and demographic information about the country of North Korea.
North Korean Weapons Capabilities
A deep site from the Federation of American Scientists that provides a wealth of information regarding North Korea's weapons capabilities, as well as facilities, doctrine, and organization.
History of North Korean Nuclear Weapons Development
Utilizing declassified documents, this site examines the history of North Korea's nuclear weapons program and the US response from the early 1980s to 2003.