All in the national interest
To a Bangladeshi associated with the history of his country´s birth, the documents presented in the pages that follow evoke a strange feeling. They are like reading about the unfolding events in the future from some point in the past. These cables are all about facing the past and confronting the future. In many ways, the events of 1971 have ceased to be part of international memory, political or personal. There is no mention of 1971 when large-scale state-sponsored killing sprees are discussed, and Bangladesh provides better copy for disasters and microcredit. As far as the world is concerned, South Asia has been squeezed into matters relating to hostility between India and Pakistan because strategic interests intervene there.
From these declassified documents of Foggy Bottom (The American Papers: Secret and Confidential, India*Pakistan* Bangladesh, Documents 1965-1973, Compiled and Selected by Roedad Khan, OUP, Karachi, 1999), it is clear that the big reason why the US wanted Pakistan united was to keep the roaring Reds at bay, be they from Moscow, Peking or from the fabled hills of Naxalbari.