Which guidance document presribes a uniform system for classifying safeguarding and declassifying national security information?

Answer 1

The guidance document that prescribes a uniform system for classifying and declassifying national security information is Executive Order 13526, titled "Classified National Security Information." Issued in December 2009, it establishes the framework for the classification of information, including the criteria for determining what information should be classified and the procedures for declassification. This order aims to protect national security while promoting transparency and accountability.