evidence: The Shatt al-Arab (Arabic: شط العرب, lit. 'River of the Arabs'; Persian: اروندرود, romanized: Arvand Rud, lit. 'Swift River'[5]) is a river about 200 kilometres (120 mi) in length that is formed at the confluence of the Euphrates and Tigris rivers in the town of al-Qurnah in the Basra Governorate of southern Iraq. The southern end of the river constitutes the Iran–Iraq border down to its mouth, where it discharges into the Persian Gulf. The Shatt al-Arab varies in width from about 232 metres (761 ft) at Basra to 800 metres (2,600 ft) at its mouth. It is thought that the waterway formed relatively recently in geological time, with the Tigris and Euphrates originally emptying into the Persian Gulf via a channel further to the west. Kuwait's Bubiyan Island is part of the Shatt al-Arab delta.[1] [...] Geography [edit]The Shatt al-Arab is formed by the confluence of the Tigris and Euphrates rivers at Al-Qurnah, and flows into the Persian Gulf south of the city of Al-Faw. It receives the Karun at Khorramshahr. [...] - ^ "Shatt al Arab". Oxford Public International Law. Retrieved 23 April 2022.