FILE - In this file photo dated Aug. 9, 1990, former Ethiopian president Mengistu Haile Mariam, during a ceremony in Ethiopia. Mengistu Haile Mariam ruled Ethiopia from 1974 to 1991 and is blamed for the killing of hundreds of students, intellectuals and politicians during what became known as the "Red Terror", against supposed enemies of his Soviet-backed military dictatorship. (AP Photo/Aris Saris, file)