On 17 November 1958, a group of senior Sudanese military officers led by General Ibrahim Abboud seized control of the government, displacing the civilian administration of Prime Minister Abdallah Khalil. Notably, later academic research characterizes this as effectively a self-coup: Khalil, himself a retired general and the country's Defence Minister, is described as having prompted Abboud and General Ahmad Abd al-Wahab to carry out the takeover expecting to retain power under military rule, only to be excluded once the coup succeeded. The bloodless coup led to the dissolution of parliament and all political parties, suspension of the constitution, and a ban on assemblies, trade unions, and newspapers, with power vested in a 12-member Supreme Council of the Armed Forces under Abboud.
Army rule brought initial economic improvements, but the regime's later Arabization and Islamization policies in southern Sudan — including expelling foreign Christian missionaries and imposing an Arabic-Islamic curriculum — fueled southern resistance that grew into the Anya Nya guerrilla insurgency beginning in September 1963. Abboud's military government remained in power until it was itself toppled in Sudan's October 1964 popular uprising.
Researched Details
Researched
Independent research, added record by record. Hover any label for what it means.
Target identified in Coup Atlas research: Abdallah Khalil, Prime Minister of Sudan
RESEARCHED NAME
Key figures
General Ibrahim Abboud (coup leader, later President/Chairman of Supreme Council of Armed Forces)
General Ahmad Abd al-Wahab (co-conspirator military officer)
Sources
On 17 November 1958, a group of senior Sudanese military officers under General Ibrahim Abboud took over the Sudanese government, replacing the preceding civilian administration.
SOURCE REVIEWEDU.S. Department of State, Office of the Historian — FRUS 1958–1960, Vol. XIV, Doc. 43, "Special National Intelligence Estimate: Outlook for the Sudan" (SNIE 72.1-59, 6 January 1959) (U.S. Intelligence Board / Department of State)open source ↗
The government displaced was that of Prime Minister Abdallah Khalil, referenced in contemporary U.S. intelligence analysis in connection with prior Nile-waters negotiations with Nasser's Egypt.
SOURCE REVIEWEDU.S. Department of State, Office of the Historian — FRUS 1958–1960, Vol. XIV, Doc. 43 (U.S. Intelligence Board / Department of State)open source ↗
According to political-science research on Sudanese coups, Prime Minister Abdallah Khalil — himself a retired army general and the country's Defence Minister — prompted Generals Ibrahim Abboud and Ahmad Abd al-Wahab to overthrow the coalition government, expecting to retain power under military rule; instead, once the coup succeeded, Khalil was excluded from the new government.
SOURCE REVIEWEDSalah Ben Hammou, "The Varieties of Civilian Praetorianism: Evidence From Sudan's Coup Politics," Armed Forces & Society (2024), accessed via ResearchGate preview pageopen source ↗
The coup was bloodless; Abboud dissolved all political parties, prohibited assemblies, and temporarily suspended newspapers.
SOURCE REVIEWEDEncyclopaedia Britannica, "Ibrāhīm ʿAbbūd" (Encyclopaedia Britannica editors)open source ↗
A Supreme Council of the Armed Forces made up of 12 senior officers was established to govern, and army rule initially brought rapid economic improvements.
SOURCE REVIEWEDEncyclopaedia Britannica, "Ibrāhīm ʿAbbūd" (Encyclopaedia Britannica editors)open source ↗
Abboud's government pursued Arabization and Islamization in the south — staffing key administrative and police posts with northerners, shifting education from an English/Christian-missionary curriculum to an Arabic-Islamic one, and expelling foreign Christian missionaries between 1962 and 1964 — which fed growing southern resistance and the emergence of the Anya Nya guerrilla movement, which launched its uprising in September 1963.
SOURCE REVIEWEDEncyclopaedia Britannica, "South Sudan: Sudanese independence and civil war" (Encyclopaedia Britannica editors)open source ↗
The ousted administration was a National Umma Party-led civilian government backed by the Ansar religious order.
INDIRECT CITATIONWikipedia, "1958 Sudanese coup d'état," citing The Cambridge History of Africa, Vol. 8, 1984, p. 528open source ↗
The coup was timed to preempt a scheduled parliamentary no-confidence vote against Khalil's cabinet, and was carried out with the prior knowledge of the United States and United Kingdom; Abboud's regime later collapsed in the October 1964 popular uprising.
INDIRECT CITATIONWikipedia, "1958 Sudanese coup d'état," citing Ben Hammou, "The Varieties of Civilian Praetorianism...", 2023, and The Cambridge History of Africa, Vol. 8, 1984, p. 531open source ↗
Editorial Note
Sources disagree on how to characterize this event. Standard treatments (Britannica, the 1959 U.S. intelligence estimate) describe it straightforwardly as a military takeover by General Abboud that displaced the civilian government of PM Abdallah Khalil. However, more recent political-science research (Ben Hammou 2024, Armed Forces & Society) characterizes it as effectively a 'self-coup': Khalil, a retired general and Defence Minister, is described as having prompted Abboud and Gen. Ahmad Abd al-Wahab to stage the takeover expecting to retain power, only to be excluded once it succeeded. Both framings agree Khalil's civilian government was removed and Abboud's military junta took over, consistent with the dataset's coding. I was unable to directly access two sources named in Wikipedia's footnotes (The Cambridge History of Africa, Vol. 8, 1984, and Shillington's Encyclopedia of African History, 2005) despite attempts via archive.org and Google Books, so facts drawn from them are labeled CHAIN rather than VERIFIED. The main Wikipedia article page for the coup was intermittently unfetchable this session (some attempts returned a 'cache-only domain' error); one fetch did succeed and is the basis for the CHAIN citations above. | Fetched all 6 VERIFIED source URLs directly: (1) FRUS 1958-60 Vol XIV Doc 43 confirmed real, quote about Abboud's takeover verbatim in Conclusion 1; (2) same FRUS doc, Khalil/Nasser/Nile-waters quote verbatim in Conclusion 3; (3) ResearchGate page for Ben Hammou (2024, Armed Forces & Society, correct DOI/journal/author confirmed via SAGE) is real and contains the exact quoted text about Khalil prompting Abboud and Abd al-Wahab, expecting to retain power, then being excluded — this self-coup narrative is also independently corroborated by multiple other sources (Wikipedia, Encyclopedia.com, Responsible Statecraft) so it is not an invented/fringe claim; (4) and (5) Britannica Abboud biography confirmed verbatim for both the bloodless-coup/dissolution-of-parties claim and the 12-officer Supreme Council/economic-improvement claim; (6) Britannica South Sudan article confirmed verbatim for Arabization/Islamization, missionary expulsion 1962-64, and Anya Nya September 1963 uprising. Both CHAIN facts sanity-checked: live-fetched the Wikipedia 1958 Sudanese coup d'état article, confirmed it exists and contains both claims essentially as stated, sourced to Cambridge History of Africa Vol 8 (1984) pp.528/531 as claimed (minor imprecision: the Ben Hammou 2023 citation appears in the references near, rather than as the explicit inline footnote for, the October 1964 collapse sentence — not a fabrication, just a loose citation pairing). target_leader (Abdallah Khalil) is well supported by both the FRUS document and Ben Hammou. Summary contains no claims beyond what the sourced facts support. No dead links, no fabricated quotes, no invented facts found — nothing warranted downgrading.
Cross-Reference
Datasets agree. At least two of the three reference datasets we check against carry this event, and none of them disagrees about its date or its result.
Identifiers for finding this same event in the other datasets:
Coup Atlas research identifies the target as: Abdallah Khalil, Prime Minister of Sudan.
Baseline coding: Incumbent executive removed from power. Recorded leader fate: deposed; 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
“Sudan Coup Puts Army in Control,” by Foster Hailey, November 18, 1958
“Martial Law Ordered in Sudan as Riots and Violence Continue,” October 29, 1964
“New Sudanese regime Named to end military rule,” October 31, 1964
“General Leaves Sudanese regime,” November 16, 1964
“Upset in the Sudan Civilian Overthrow of Military Junta Viewed as Salutary Reversal of Form,” November 17, 1964
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 →