During the communications black out, he used satellite image analysis to uncover Eritrean refugee camps that were intentionally burnt. To this day, 70,000 Eritreans are unaccounted for.
Zecharias continues to uncover drone massacres in Ethiopia, by the government. Take a look at this cover story on @thecontinent.
https://www.thecontinent.org/_files/ugd/287178_e11e90bd50bc4161be1b98cf79062d02.pdf