Wikipedia: The Cushitic-speaking peoples today comprise the Agaw [an ethnic group inhabiting Ethiopia and neighboring Eritrea], Oromo [an ethnic group inhabiting Ethiopia, who are also found in northern Kenya and Somalia], Somali, Afar [They primarily live in the Afar Region of Ethiopia and in northern Djibouti, although some also inhabit the southern point of Eritrea.], and several other tribes, and were considered offspring of Cush in Masudi’s Meadows of Gold from 947 AD. The Beja people [an ethnic group inhabiting Sudan, as well as parts of Eritrea, Egypt, and the Eastern Desert], who also speak a Cushitic language, have specific genealogical traditions of descent from Cush.
as defined by the Intergovernmental Authority on Development [IGAD]: The Greater Horn of Africa comprises eight countries [Djibouti, Eritrea, Ethiopia, Kenya, Somalia, South Sudan, Sudan, Uganda].
