Horn of Africa displays the greatest diversity, a sign often viewed to represent a geographic origin. The Horn of Africa is also the place where the haplogroup E1b1b originated from, Christopher Ehret and Shomarka Keita have suggested that the geography of the E1b1b lineage coincides with the distribution of the Afroasiatic languages. Genetic analysis done on the Afroasiatic speaking population further found that a pre-agricultural back-to-Africa migration into the Horn of Africa occurred through Egypt 23,000 years ago and it brought a non-African ancestry dubbed Ethio-Somali in the region. Together with northern Somalia, Djibouti, the Red Sea coast of Sudan and Eritrea is
Operation Enduring Freedom – Horn of Africa of Galkayo, a Somali army unit conducting counterterrorism operations nearby, when the Somali soldiers came under fire from al-Shabab militants. The Somali soldiers engaged them, then broke contact and rejoined with their nearby American advisers and soon afterwards the militants "began to maneuver in an offensive manner" so the U.S. conducted a self-defense airstrike, killing 4 militants. 26 U.S. servicemen have been killed in non-hostile incidents in Djibouti since the start of operations in the Horn of Africa. Three U.S. soldiers were killed in accidents in Kenya. Two U.S. soldiers were killed in a vehicle accident in Ethiopia. Two U.S.