After the war, Ethiopia annexed Eritrea.[2] However, ethnic tensions surged between the Amhara and the Eritrean, Oromo, Somali, and Tigray peoples, each of whom had formed separatist movements dedicated to leaving Amhara-dominated Ethiopia.[2] After the overthrow of the Ethiopian monarchy by the Derg military junta, the country became aligned with the Soviet Union and Cuba after the United States failed to support it in its military struggle with Somali separatists in the Ogaden region.[2] After the end of military government in Ethiopia in 1993, Eritrea separated from Ethiopia.[2]