Still, Ethiopia was attacked at the 1973 OAU summit in Addis Abeba by the Libyan delegation, accusing Ethiopia of allowing the build-up of Israeli bases on its territory.At the summit the Algerian president Houari Boumediène called on Ethiopia to break its relations with Israel.
Trade relations between Ethiopia and Israel have grown over the years.
In the early 1980s, Dafron, an Israeli notebook manufacturer, won a government contract to market 2 million notebooks to Ethiopia.
An Israeli colonel was put in charge of a military training school at Decamare and the training of the Ethiopian Marine Commando Forces.
The Ethiopian-Israeli cooperation had impacts on the discourse of the Eritrean rebel movements, which increasingly began to use anti-Zionist rhetoric.
In 1985 Israel reportedly sold Addis Ababa at least US$20 million in Soviet-made munitions and spare parts captured in Lebanon.
According to the Eritrean People's Liberation Front (EPLF), the Mengistu regime received US million worth of Israeli military aid in 1987, and Israel deployed some 300 military advisers to Ethiopia.
Additionally, the EPLF claimed that thirty-eight Ethiopian pilots had gone to Israel for training.
In late 1989, Israel reportedly finalized a secret agreement to provide increased military assistance in exchange for Mengistu's promise to allow Ethiopia's remaining Beta Israel to immigrate to Israel.
The break of relations with Israel caused the United States to tone down its support to Imperial rule in Ethiopia. In 1978, however, when the Israeli Minister of Foreign Affairs Moshe Dayan admitted that Israel had been providing security assistance to Ethiopia, Mengistu Haile Mariam expelled all Israelis so that he might preserve his relationship with radical Arab states such as Libya and South Yemen.
Even after Ethiopia broke diplomatic relations with Israel in 1973, Israeli military aid continued after the Derg military junta came to power and included spare parts and ammunition for U. Although, Addis Ababa claimed it had terminated its military relationship with Israel, military cooperation continued.
In return, Boumediène offered to use his political leverage to freeze Arab support for the ELF.