Falklands: USE Buenos Aires airgram to the State Department ("The Malvinas (Falkland) Islands: A Political and Social Review") [predicts negotiations will eventually secure the islands for Argentina and end "Britain's admittedly anachronistic colonial rule"] [published 2015]

Excerpt from Foreign Relations of the United States 1981-89 (Volume XIII) Conflict in the South Atlantic (2015). Other documents from this volume can be seen here. Read the whole volume.

Published in 2015, but date of declassification unknown. The document may have been available for some time before inclusion in this volume.