The United Arab Emirates (UAE) is a major oil producing and exporting country located on the Arabian peninsula. The country is a confederation of seven states, or emirates, of which Abu Dhabi and Dubai are by far the most important politically and economically. Most of the UAE's oil and gas production (>95%) is in Abu Dhabi. Abu Dhabi started producing oil in the early 1960s and became a member of OPEC in 1967, four years before the different parts of the UAE united to become one country. The UAE is strategically located at the foot of the Persian Gulf. The country has a coastline on the Gulf and one facing the Arabian Sea opening out to the Indian Ocean. Onshore oil production is exported from terminals on the Gulf coast and there are offshore terminals located on Das and Zirku Islands off Abu Dhabi. The ADGAS LNG plant is also based on Das Island.