Once banned in Ethiopia, the Oromo Liberation Front (OLF) is now likely to become involved in mainstream politics.
Tens of thousands of people attended a ceremony in the capital, Addis Ababa, to welcome OLF while other celebrations took place across the Oromo region.
This is the latest of sweeping measures taken by Prime Minister Abiy Ahmed since he came to office in April.
His aim? To build a new political framework that involves formerly banned groups as part of an initiative to end years of ethnic conflict.
So, is the country on track to reconciliation? And what does it mean for this volatile region?
Presenter: Sami Zeidan
Awol Allo – assistant professor, Keele University, UK
Goitom Gebreluel – researcher, Cambridge University, UK
Tsedale Lemma – editor-in-Chief of the Addis Standard in Addis Ababa