Why are Ethiopia's rebels joining forces?

Seven rebel groups from across Ethiopia have announced a new alliance against Prime Minister Abiy Ahmed's government.

Some were once rivals, others fought separately, but they now say they're united by a common goal.

So, who are they, and why have they joined forces now, just as fighting has flared once more in the northern Tigray region?

Produced by Aaron Akinyemi and Bruno Garcez

️Edited by Aaron Akinyemi

Narration: Victoria Uwonkunda