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Bahrain is a small island kingdom in the Gulf, tied to Saudi Arabia by a causeway and just west of Qatar. Once the seat of the ancient Dilmun trading culture and a great pearling centre, it struck the first oil on the Arab side of the Gulf in 1932.

Qal'at al-Bahrain, the ancient Dilmun harbour
Photo: Martin Falbisoner, CC BY-SA 4.0