The Tigray War was an armed conflict that lasted from 3 November 2020 to 3 November 2022. The war was primarily fought in the Tigray Region of Ethiopia between the Ethiopian federal government and Eritrea on one side, and the Tigray People's Liberation Front (TPLF) on the other. After years of increased tensions and hostilities between the TPLF and the governments of Ethiopia and Eritrea, fighting began when Tigrayan security forces attacked the Northern Command headquarters of the Ethiopian National Defense Force (ENDF), alongside a number of other bases in Tigray. The ENDF counterattacked from the south – while Eritrean Defence Forces (EDF) began launching attacks from the north – which Prime Minister Abiy Ahmed described as "law enforcement operations". Federal allied forces captured Mekelle, the capital of the Tigray Region, on 28 November, after which Abiy declared the operation "over." However, the TPLF stated soon afterwards that it would continue fighting until the "invaders" were out, and on 28 June 2021, the Tigray Defense Forces (TDF) retook Mekelle; by July the same year, they had also advanced into the Amhara and Afar regions. In early November 2021, the TDF, together with the Oromo Liberation Army (OLA), took control of several towns on the highway south from Tigray Region towards Addis Ababa, and the TPLF stated that it considered "marching on [the capital]." Together with seven smaller rebel groups, the TPLF and OLA declared a coalition aiming to "dismantle Abiy's government by force or by negotiations, and then form a transitional authority." After a successful government counter-offensive in response, and then a series of negotiations with the TPLF, Ethiopia declared an indefinite humanitarian truce on 24 March 2022, in order to allow the delivery of humanitarian aid into Tigray. However, fighting dramatically re-escalated in late August 2022, after peace talks broke down. Rapid mobilization of troops soon followed, with Ethiopia, Eritrea and Tigray reportedly organizing hundreds of thousands of troops against each other by October the same year.