Ethiopian Prime Minister Hailemariam Desalegn’s surprise resignation came after sustained anti-government protests in the East African country.
While the government considers who will take his place, it has imposed a state of emergency for the next six months.
The two largest groups, the Oromo and the Amhara, make up around two-thirds of all Ethiopians.
Tigrayans account for just six percent of the population but they dominate politics and the security forces.
It is a 25-year-old arrangement but one that is causing a great deal of resentment among the other groups.
So, what’s next for Ethiopia?
Presenter: Martine Dennis
Harry Verhoeven – visiting scholar at Cambridge University
Mohamed Ademo – founder and editor of OPride.com, an independent news website about Oromo and Ethiopia