“Pentagon classification authorities are treating classified historical documents as if they contain today’s secrets, rather than decades-old information that has not been secret for years. Today the National Security Archive posted multiple versions of the same documents—on issues ranging from the 1973 October War to anti-ballistic missiles, strategic arms control, and U.S. policy toward China—that are already declassified and in the public domain. What earlier declassification reviewers released in full, sometimes years ago, Pentagon reviewers have more recently excised, sometimes massively. The overclassification highlighted by these examples poses a major problem that should be addressed by the ongoing review of national security information policy that President Obama ordered on May 27, 2009. New presumptions against classification that may be added to an executive order on national security information will not, in isolation, end overclassification. Rigorous oversight, accompanied by improved training and consequences for improper classification are essential.”