NAIROBI, Kenya — Ethiopia's prime minister said Friday that airstrikes have been carried out against the forces of the country's well-armed Tigray region, asserting that the strikes in multiple locations "completely destroyed rockets and other heavy weapons" and made it impossible for a retaliatory attack.
Abiy Ahmed's announcement on the state broadcaster marked another escalation in clashes this week that experts say could slide into civil war.
There was no mention of casualties in what Abiy called the "first round of operation" against the region's government, the Tigray People's Liberation Front. He said the air force destroyed heavy weapons in Tigray's capital, Mekele, and its surrounding areas, alleging that the TPLF "has the desire to use them."
The operation will continue, Abiy said, "until the junta is made accountable by law."
There was no immediate response from the Tigray government, while the region is increasingly boxed in by movement restrictions and a six-month state of emergency imposed by the federal government.
Hours earlier, the prime minister defended the military operations that were launched early Wednesday after Abiy accused the Tigray government of a deadly attack on a military base.
He asserted that months of patiently trying to resolve differences with the regional government have failed because of the leadership's "criminal hubris and intransigence."
With that, the prime minister appeared to close the door on dialogue, which some experts and diplomats say is desperately needed.
He asserted that the "large-scale law enforcement operation" has "clear, limited and achievable objectives: to restore the rule of law and the constitutional order." He described the region's leadership as "fugitives from justice ... using the civilian population as human shields."
The prime minister, who won the Nobel Peace Prize last year for his sweeping political reforms, now faces his greatest test as the TPLF, which dominated Ethiopia's government before he took office in 2018, has pushed back while feeling marginalized.
The northern Tigray region is increasingly cut off as Ethiopia's civil aviation authority said airports in Mekele and the regional cities of Shire, Axum and Humera were "closed for any services." And in Sudan, the acting governor of Kassla province said its border with northern Ethiopia has closed "until further notice" due to the tensions, the Sudan News Agency reported.
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Alarm has grown as one of Africa's most powerful and populous countries nears civil war, which experts say would be catastrophic and destabilizing for the Horn of Africa. It was not clear who might be leading any mediation; the African Union, based in Ethiopia, has not issued a statement.
Aid groups warn a humanitarian disaster is in the making if fighting continues, with the Covid-19 pandemic just one of several crises.
Communications remained almost completely cut off in Tigray. They disappeared around the time that Abiy made his early Wednesday announcement.
The attack on a military base was "the last straw," Abiy said Friday.
Both sides issued strong statements Thursday. Ethiopia's army said it was deploying troops from around the country to Tigray, and the Tigray leader announced that "we are ready to be martyrs." Casualties have been reported on both sides.