declassification on:
[Wikipedia]
[Google]
[Amazon]
Declassification is the process of ceasing a protective 
classification
Classification is the activity of assigning objects to some pre-existing classes or categories. This is distinct from the task of establishing the classes themselves (for example through cluster analysis). Examples include diagnostic tests, identif ...
, often under the principle of freedom of information. Procedures for declassification vary by country. Papers may be withheld without being classified as secret, and eventually made available.
United Kingdom
Classified information has been governed by various Official Secrets Acts, the latest being the Official Secrets Act 1989. Until 1989 requested information was routinely kept secret invoking the public interest defence; this was largely removed by the 1989 Act. TheFreedom of Information Act 2000
The Freedom of Information Act 2000 (c. 36) is an Act of the Parliament of the United Kingdom that creates a public right of access to information held by public authorities. It is the implementation of freedom of information legislation in t ...
largely requires information to be disclosed unless there are good reasons for secrecy.
Confidential government papers such as the yearly cabinet papers used routinely to be withheld formally, although not necessarily classified as secret, for 30 years under the thirty year rule, and released usually on a New Year's Day
In the Gregorian calendar, New Year's Day is the first day of the calendar year, January 1, 1 January. Most solar calendars, such as the Gregorian and Julian calendars, begin the year regularly at or near the December solstice, northern winter ...
; freedom of information legislation has relaxed this rigid approach.
United States
Executive Order 13526 establishes the mechanisms for most declassifications, within the laws passed by Congress. The originating agency assigns a declassification date, by default 25 years. After 25 years, declassification review is automatic with nine narrow exceptions that allow information to remain as classified. At 50 years, there are two exceptions, and classifications beyond 75 years require special permission.{{Cite web , date=2014-09-09 , title=Declassification Frequently Asked Questions , url=https://www.justice.gov/archives/open/declassification/declassification-faq , access-date=2022-05-28 , website=www.justice.gov , language=en Because of changes in policy and circumstances, agencies are expected to actively review documents that have been classified for fewer than 25 years. They must also respond to Mandatory Declassification Review and Freedom of Information Act requests. TheNational Archives and Records Administration
The National Archives and Records Administration (NARA) is an independent agency of the United States government within the executive branch, charged with the preservation and documentation of government and historical records. It is also task ...
houses the National Declassification Center to coordinate reviews and Information Security Oversight Office to promulgate rules and enforce quality measures across all agencies. NARA reviews documents on behalf of defunct agencies and permanently stores declassified documents for public inspection. The Interagency Security Classification Appeals Panel has representatives from several agencies.
See also
* Freedom of information *Freedom of information legislation
Freedom of information laws allow access by the general public to data held by national governments and, where applicable, by state and local governments. The emergence of freedom of information legislation was a response to increasing dissatis ...
*'' United States v. Reynolds''
References