Geoffrey B. Robinson, The Killing Season: A History of the Indonesian Massacres, 1965–66, Princeton University Press, 2018, pp. 206–207, ISBN 978-1-4008-8886-3.
«"In short, Western states were not innocent bystanders to unfolding domestic political events following the alleged coup, as so often claimed. On the contrary, starting almost immediately after October 1, the United States, the United Kingdom, and several of their allies set in motion a coordinated campaign to assist the Army in the political and physical destruction of the PKI and its affiliates, the removal of Sukarno and his closest associates from political power, their replacement by an Army elite led by Suharto, and the engineering of a seismic shift in Indonesia's foreign policy towards the West. They did this through backdoor political reassurances to Army leaders, a policy of official silence in the face of the mounting violence, a sophisticated international propaganda offensive, and the covert provision of material assistance to the Army and its allies. In all these ways, they helped to ensure that the campaign against the Left would continue unabated and its victims would ultimately number in the hundreds of thousands."»