The Pentagon Papers, officially titled United States Vietnam Relations, A Study Prepared by the Department of Defense, is a United States Department of Defense history of the United States' political-military involvement in Vietnam from 1945 to 1967. The papers were first brought to the attention of the public on the front page of The New York Times in 1971. A 1996 article in The New York Times said that the Pentagon Papers 'demonstrated, among other things, that the Johnson Administration had systematically lied, not only to the public but also to Congress, about a subject of transcendent national interest and significance'. The report was declassified and publicly released in June 2011. Secretary of Defense Robert McNamara created the Vietnam Study Task Force on June 17, 1967, for the purpose of writing an 'encyclopedic history of the Vietnam War'. The secretary's motivation for doing so is unclear.
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