He signed the following November 1989 peace deal with the EPLF in Nairobi, along with Jimmy Carter and Al-Amin Mohamed Said.
In 1991, while Ebisa was waiting for admission to a university, the military regime of Ethiopia was overthrown by OLF, EPRDF, and EPLF forces.
In 1988, with the Battle of Afabet, the EPLF captured Afabet and its surroundings, then headquarters of the Ethiopian Army in northeastern Eritrea, prompting the Ethiopian Army to withdraw from its garrisons in Eritrea's western lowlands.
He has overseen the transition from the revolutionary EPLF school system to a national education system.