Persian Gulf flooding of the basin started 15,000 years ago due to rising sea levels of the Holocene glacial retreat. This inland sea of some is connected to the Gulf of Oman in the east by the Strait of Hormuz; and its western end is marked by the major river delta of the Shatt al-Arab, which carries the waters of the Euphrates and the Tigris. In Iran this is called "Arvand Rood", where "Rood" means "river". Its length is , with Iran covering most of the northern coast and Saudi Arabia most of the southern coast. The Persian Gulf is about wide
Persian Gulf which the Allies transported equipment to Russia against the Nazi invasion. From 1763 until 1971, the British Empire maintained varying degrees of political control over some of the Persian Gulf states, including the United Arab Emirates (originally called the Trucial States) and at various times Bahrain, Kuwait, Oman, and Qatar through the British Residency of the Persian Gulf. The United Kingdom maintains a high profile in the region to date; in 2006 alone, over 1 million British nationals visited Dubai. In 2014, the UK announced it will reestablish a permanent military base, HMS Jufair, in the Persian Gulf, the first