Yemen (/ˈjɛmən/ ; Arabic: ٱلْيَمَنْ, romanized: al-Yaman), officially the Republic of Yemen,[b] is a sovereign state in West Asia. Located in the southern Arabian Peninsula, it borders Saudi Arabia to the north, Oman to the northeast, and the Indian Ocean to the south, sharing maritime borders with Eritrea, Djibouti and Somalia across the Horn of Africa. Covering roughly 528,000 square kilometres (203,861 square miles), with a coastline of approximately 2,000 kilometres (1,200 miles), Yemen is the second largest country on the Arabian Peninsula