The Persian Gulf Port of DUBAI is a major port city in the United Arab Emirates, located on the southeast coast of the Persian Gulf. It is the largest and most populous city in the UAE, and is a major global business hub. The port of BASRA is located in Iraq, on the Shatt al-Arab waterway at the head of the Persian Gulf. It is Iraq's main port and the second largest port in the Persian Gulf after DUBAI. Both ports are important for trade and commerce in the region, and have been used as major trading hubs since ancient times.