Ethiopia shuttered its embassy in Eritrea’s capital Asmara on Thursday and named 10 Eritrean diplomats persona non grata, after accusing its East African neighbor of arming and supporting rebels in Ethiopia’s northern Tigray region. Eritrea responded by severing diplomatic ties with Ethiopia. It’s the worst confrontation between the two nations since they signed a peace agreement in 2018 formally ending 20 years of war. The diplomatic conflict erupted hours after drones struck near the headquarters of Ethiopia’s military and other sites in Addis Ababa. Reuters reports a source linked to the Tigray People’s Liberation Front claimed responsibility on behalf of the rebel group, which last week resumed attacks on government forces for the first time since a 2022 ceasefire ended a devastating civil war.