Mengistu Haile Mariam was the Ethiopian military dictator who, as chairman of the Derg and head of state, ruled Ethiopia from February 1977 to May 1991, a period that saw the Ogaden War, the Eritrean independence struggle — the long decline of the Ethiopian state into famine and civil war. His regime was the largest single Soviet client state in sub-Saharan Africa and the recipient of a sustained Cuban troop presence from 1977 to 1989. He was tried in absentia in Ethiopia in 2006 for genocide and other crimes.
Mengistu was born in 1937 in the village of Harar, the son of a military family. He was commissioned in the Ethiopian army in 1960 and rose through the air force logistics branch to the rank of major. On September 12, 1974, he was a member of the 108-man coordinating committee of the Derg (the Amharic word for “committee” or “junta”) that overthrew Emperor Haile Selassie. The Derg, dominated by junior officers of mixed ethnic and ideological commitments, gradually consolidated around Mengistu through a series of purges in 1974–1977. In November 1974, he ordered the summary execution of sixty former officials of the imperial regime, including two former prime ministers. On February 3, 1977, in a shootout at a Derg meeting, he eliminated his chief rival, Atnafu Abate, and became the effective head of state.
The Red Terror of 1977–1978 was Mengistu’s principal political instrument. Officially titled the “Ethiopian Red Terror Campaign” by its perpetrators, it was a campaign of mass killing aimed at leftists opposed to the Derg’s military rule. The most violent phase followed the Derg’s June 1977 turn toward Soviet-style Marxism-Leninism and the formal adoption of the “National Democratic Revolution Programme” in April 1976. The urban phase of the Red Terror killed several thousand suspected opponents in Addis Ababa and other cities; the rural phase, which lasted through 1978, killed many more in the provinces. The exact toll is unknown, but the standard scholarly estimate is that the Red Terror killed 30,000 to 50,000 Ethiopians. Amnesty International’s 1978 report Ethiopia: The Massacre of the Innocents drew international attention to the campaign.
Mengistu’s foreign-policy alignment was a direct consequence of the Red Terror. The 1977–1978 domestic terror, combined with the Ogaden invasion from Somalia, drove the Derg fully into the Soviet camp. The result was a continuous Soviet subsidy: $1.5 billion in military aid in 1977–1984, 1,500 Soviet military and civilian advisers, airlift of 1977–1978. The Cuban presence, which began in December 1977, peaked at 17,000 troops in 1978 and was reduced to 1,500 by 1989, when the Soviet withdrawal from Ethiopia was underway.
The war with Eritrea was Mengistu’s longest and most ruinous. The Eritrean People’s Liberation Front (EPLF) and the Eritrean Liberation Front (ELF) had been fighting for Eritrean independence since 1961. The Derg’s response was the systematic deportation of the Eritrean population from the northern highlands to the south, in operations in 1978 and again in 1988, which killed perhaps 100,000 Eritreans and produced a long refugee crisis. The EPLF’s capture of Afab in March 1988 and Asmara in May 1990 marked the end of the Eritrean war.
The 1984–1985 famine killed perhaps 1 million Ethiopians and made the regime a pariah in international public opinion. The Live Aid concert of July 13, 1985 was organized in response to BBC coverage of the famine, which the regime had actively concealed. The famine, which was the product of drought, civil war, and the Derg’s forced-relocation programs in the south, destroyed the regime’s last domestic legitimacy.
The end came in May 1991. The EPLF, combined with the Ethiopian People’s Revolutionary Democratic Front (EPRDF) under Meles Zenawi, advanced on Addis Ababa as the Soviet Union withdrew support. Mengistu fled to Zimbabwe on May 21, 1991, where he has lived in a comfortable Harare villa ever since. The Ethiopian Supreme Court tried him in absentia in 2006–2007, finding him guilty of genocide in absentia on December 12, 2006. He has never been extradited. For more on the Ogaden War article.