The Islamic Republic of Pakistan is a country in South Asia. Bordered by the Arabian Sea on the south, the Gulf of Oman on the southwest, and the Sir Creek on the southeast, it shares land borders with India to the east; Afghanistan to the west; Iran to the southwest; and China to the northeast. It shares a maritime border with Oman in the Gulf of Oman and is separated from Tajikistan in the northwest by Afghanistan’s narrow Wakhan Corridor. The city of Islamabad is the capital; Urdu is the official language; the Pakistani Rupee is the national currency.