(CNSNews.com) - The William Jefferson Clinton Presidential Library will not make available to the public the documents that former National Security Advisor Sandy Berger illegally took from the National Archives in 2003. A letter from the library said the 502 pages -- pertaining to a 1999 assessment of how the nation was handling terrorist threats -- are "restricted in their entirety," under federal law and that the documents are "classified in the interest of national defense or foreign policy." Further, the library stated the documents contain "confidential communications requesting or submitting advice between the president and his advisors, or between such advisors." The library's letter was in response to a Freedom of Information Act request from Cybercast News Service.