Yemen, officially the Republic of Yemen, is a country in West Asia. Located in southern Arabia, it borders Saudi Arabia to the north, Oman to the northeast, the Red Sea to the west, the Gulf of Aden to the south, and the southeasten part of the Arabian sea to the east, sharing maritime borders with Eritrea, Djibouti and Somalia across the Horn of Africa. Covering roughly 455,000 square kilometres (176,000 square miles), with a coastline of approximately 2,000 kilometres (1,200 miles), Yemen is the second largest country on the Arabian Peninsula.
https://en.wikipedia.org/wiki/Yemen