Yemen (Arabic: ٱلْيَمَن, romanized: al-Yaman), officially the Republic of Yemen, is a country in Western Asia. It is situated on the southern end of the Arabian Peninsula, and borders Saudi Arabia to the north and Oman to the northeast and shares maritime borders with Eritrea, Djibouti and Somalia. Yemen is the second-largest Arab sovereign state in the Arabian Peninsula, occupying 555,000 square kilometres (214,000 square miles), with a coastline stretching about 2,000 kilometres (1,200 miles). Its constitutionally stated capital, and largest city, is Sanaa. As of 2023, Yemen has an estimated population of 34.2 million.