Harry Barnes and the 'Violence and Terror' Plan to Save Pinochet's Rule

By Harlan Pryce · September 14, 2026

Thousands of Chileans faced a massacre to keep a dictator in power, a plan the State Department tracked through military leaks and recorded in a cable dated October 1, 1988.

Thousands of Chileans stood on the edge of a state-sponsored massacre in the autumn of 1988. They were betting their lives on a ballot, hoping that a democratic vote could dislodge a man who had spent fifteen years perfecting the art of the disappearance.

Augusto Pinochet, the army officer who led the 1973 overthrow of President Salvador Allende and presided over a regime that tortured and executed thousands of political opponents, did not intend to go quietly. The details of his final attempt to cling to power survive today in an archival description of a diplomatic cable rather than the original pages. The record shows that by late September 1988, Pinochet had decided that if the people voted him out, he would simply kill enough of them to ensure he stayed in.

"Probable Substantial Loss of Life"

On October 1, 1988, Harry Barnes, the U.S. Ambassador in Santiago who served as the conduit for warnings about the regime's instability, sent a dispatch to the State Department that stripped away any diplomatic veneer. Barnes warned that Pinochet was determined to use "violence and terror" to stop the upcoming plebiscite if the numbers did not favor the dictator. The record is blunt: Barnes told Washington that the result of Pinochet's determination would be a "probable substantial loss of life."

This was not a vague apprehension or a diplomatic hunch. The record shows that the CIA, the DIA—the intelligence body that tracks the movement and intentions of foreign military forces—and the U.S. Embassy in Santiago had all converged on the same conclusion. They were reading the same script, and that script was being written inside the Chilean army.

Document imagery from nsarchive.gwu.edu From the files: nsarchive.gwu.edu

The Campaign of the NO

Pinochet’s desperation was a direct response to the success of the campaign of the NO, the opposition movement that had organized a sophisticated effort to defeat the dictator at the polls. Public record establishes that opinion polls at the time were showing a likely victory for the NO. For a man who had ruled through a military junta since 1974, a democratic defeat was not a political loss; it was an existential threat.

When a dictator realizes the public has stopped fearing him, he usually tries to remind them why they should. The record establishes that Pinochet’s plan to use "violence on whatever scale is necessary to retain power" was timed precisely to the moment the polls turned against him. He was preparing to abort the plebiscite through a bloodbath, transforming a democratic exercise into a slaughterhouse to ensure his own survival.

The Leak from Within

The most striking detail of the record is not what Pinochet planned, but how the United States found out. The CIA, the DIA, and the U.S. Embassy obtained this intelligence from "multiple sources inside the military."

This reveals a critical fracture in the Chilean power structure. While Pinochet was the head of state and the commander of the army, his own officers were feeding his secrets to the Americans. This connection suggests that a significant faction of the military high command had already decided that Pinochet was a liability. If the army had stayed loyal to the man, the U.S. would have been blind to the plot. Instead, the institutional military apparatus was hedging its bets, using the U.S. embassy as a safety valve to signal that they would not necessarily follow Pinochet into a doomed, bloody coup against their own people.

The October 3 Briefing

There is a narrow, telling window in the timeline. Barnes sent his "forcefully worded" cable on October 1. Two days later, on October 3, the White House received a Presidential Evening Reading regarding the plan to disrupt Chile's plebiscite.

The speed of this escalation—from an ambassador's warning to the president's desk in forty-eight hours—indicates that the U.S. was not merely observing a tragedy in the making. They were managing it. The record shows that the U.S. had high-level intelligence on the specific scale of violence Pinochet was prepared to unleash, yet there is no record of a public plea for democratic stability or a formal condemnation of the threat. There was only the private, forceful movement of information up the chain of command.

The Desk's Reading

If this file is shaped the way it looks, the "forcefully worded" nature of the cable was not about the urgency of the threat, but about the creation of a bureaucratic insurance policy. By emphasizing the alarm in the written record, U.S. officials were shielding themselves from future complicity charges. If Pinochet had gone through with the massacre, Washington could produce this cable to prove they had warned him, effectively washing their hands of the blood while maintaining their quiet channels to the military.

But the pattern suggests something more active. The gap between the October 1 warning and the eventual peaceful transition of power indicates that the U.S. utilized this intelligence to execute a strategy of quiet coercion. The desk's reading is that the U.S. informed Pinochet—likely through the very military sources who were leaking his plans—that his determination to use "violence and terror" was known in Washington. By signaling that the U.S. would not support a bloodbath, and perhaps hinting at the economic or diplomatic levers they would pull to isolate him, the U.S. forced Pinochet to accept the results of the plebiscite.

This was not a victory for democracy so much as a managed handover. The intelligence flow reveals that the U.S. had already shifted its loyalty from Pinochet the man to the Chilean military as an institution. They protected the army's reputation by sacrificing the dictator's ambitions. The still-withheld pages of these exchanges likely contain the specific threats used to keep Pinochet in line—the carrots and sticks that ensured he stepped down in 1990 without a fight.

In the end, the people of the NO campaign won their freedom, but the record suggests they did so only because the U.S. decided that a stable military was more valuable than a murderous dictator. The cost of this stability was a silence that lasted decades, protecting the officers who leaked the secrets and the diplomats who managed the terror.