Coup Atlas Research Database
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15503251970ConspiracyMilitary coup

Chile, 1970 — military coup conspiracy

Chile (CHL)South America, AmericasMarch 25, 1970

Event Summary

This entry is coded 25 March 1970, in the pre-election period before Chile's 4 September 1970 presidential vote, distinct from the post-election coup plotting later that year. Salvador Allende had been nominated in January 1970 as the candidate of the leftist Popular Unity coalition, running against conservative Jorge Alessandri and Christian Democrat Radomiro Tomic. Alarmed at the prospect of a Marxist president, the Nixon administration directed the CIA, through the 40 Committee, to carry out spoiling operations to prevent an Allende victory.

This Track I effort, active through the spring and summer of 1970, involved sustained anti-Allende propaganda, financial support for opposition media such as El Mercurio, and covert political action, with State Department and CIA meetings documented across April to June 1970. The March 1970 coding sits in this early spoiling phase, before Allende's September plurality triggered the more aggressive Track II coup plotting that culminated in the October 1970 Schneider assassination.

Researched Details

Researched

Independent research, added record by record. Hover any label for what it means.

Target identified in Coup Atlas research: The spoiling operations failed; Allende won a plurality in September 1970 and was inaugurated in November
RESEARCHED NAME
Key figures
Salvador Allende (Popular Unity candidate, target of spoiling)
U.S. CIA and 40 Committee (directing spoiling operations)
Eduardo Frei (outgoing president the U.S. hoped would block Allende)

Sources

In the runup to the 1970 presidential elections, the 40 Committee directed the CIA to carry out spoiling operations to prevent an Allende victory.
SOURCE REVIEWED U.S. Report to Congress on CIA Activities in Chile open source ↗
Allende was nominated as the joint candidate of the new leftist Unidad Popular coalition in January 1970, and the CIA provided at least $400,000 to anti-Allende news media to stop his election.
SOURCE REVIEWED Zinn Education Project: The Overthrow of Democracy in Chile, A Timeline open source ↗
The CIA provided approximately $500,000 in 1969 and 1970 to Allende's opposition, coupled with a propaganda campaign portraying Allende as aligned with communist regimes.
SOURCE REVIEWED Britannica: 1973 Chilean coup d'etat open source ↗
State Department and CIA representatives met in June 1970 to weigh an expanded anti-Allende program, with documents on the spoiling operation dated across April to June 1970.
SOURCE REVIEWED U.S. State Department FRUS 1969-76 vol. XXI, ch. 2 open source ↗

Editorial Note

No discrete plot is precisely dated 25 Mar 1970 in the sources located this session; the coding sits in the pre-election Track I spoiling campaign against Allende's candidacy. Context with strong framing. First of two Chile entries in this batch; distinct from the 14 Sep 1970 post-election entry.

Cross-Reference

Only one dataset carries it. One of the three reference datasets we check against carries this event; the others do not list it. That is not a contradiction — the datasets cover different periods and use different thresholds — but it means the record has had less outside corroboration.

Identifiers for finding this same event in the other datasets:

Cline Center id
15503251970

How the match is made is described in crossref-report.md.

Outcome and Target

Coup Atlas research identifies the target as: The spoiling operations failed; Allende won a plurality in September 1970 and was inaugurated in November.

Baseline coding: Plot discovered and disrupted before execution. Recorded leader fate: remained in office; not physically harmed. The baseline file does not name individual targets; researched names are kept in a separate layer.

Baseline Dataset Citation

Cline Center Coup d’État Project Dataset, v2.2.2
Peyton, Buddy, Joseph Bajjalieh, Michael Martin, and Andrea Gerald. 2026. Cline Center Coup d’État Project Dataset. Cline Center for Advanced Social Research. V.2.2.2. February 17. University of Illinois Urbana-Champaign. doi: 10.13012/B2IDB-9651987_V10
⚑ This citation establishes the coded baseline record; use the claim-level sources above for the researched narrative.

Baseline Source-Document Entries

New York Times

“11 HELD AS PLOTTERS OF A COUP IN CHILE,” March 26, 1970

Washington Post

“Chile claims to block coup plot by Army men,” March 26, 1970

This is the citation trail carried by the baseline dataset, grouped by outlet and rejoined from the line-wrapped original. Coup Atlas has not independently re-checked every document; read the original before citing a specific claim. URLs the import damaged beyond safe repair are shown as plain text and listed in citations-report.md. How this list is built →

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