Sudan has recalled its ambassador from Addis Ababa for consultations after accusing Ethiopia of launching a drone strike on Khartoum International Airport on 4 May 2026, with Sudanese Foreign Minister Muhyiddin Salim describing the attack as a clear violation of international law against a protected civilian facility. The Sudanese military said its air defences shot down one of the drones and that forensic analysis of its data confirmed it was launched from Ethiopian territory — specifically from the Benishangul region — where Reuters had previously reported, in February 2026, the existence of a secret training camp for some 4,300 Rapid Support Forces (RSF) fighters. Ethiopia's foreign ministry flatly denied involvement, counter-accusing Khartoum of arming and financing the Tigray People's Liberation Front (TPLF), an armed opposition group inside Ethiopia, and describing Sudan as a hub for anti-Ethiopian forces. The escalation comes as the Sudanese army has been making significant battlefield gains against the RSF (a paramilitary force that has been fighting the Sudanese government since April 2023), raising fears in Khartoum that the drone campaign is intended to relieve pressure on those forces; the Sudanese military has warned that the attack "will not go unanswered," leaving open the prospect of direct armed confrontation between two of the Horn of Africa's largest states.