Djibouti, officially the Republic of Djibouti, is a country in eastern Africa. Djibouti is bordered by Eritrea in the north, Ethiopia in the west and south, and Somalia in the southeast. The remainder of the border is formed by the Red Sea and the Gulf of Aden. On the other side of the Red Sea, on the Arabian Peninsula, 20 kilometres (12 mi) from the coast of Djibouti, is Yemen. The capital of Djibouti is the city of Djibouti.