These reforms were often vigorously opposed by powerful groups within Bahrain including sections within the ruling family and merchants. In order to counter conservatives, the British removed the Ruler, Isa ibn Ali Al Khalifa in 1923 and replaced him with his son. Some Sunni families left Bahrain to mainland Arabia, whilst clerical opponents of social reforms were exiled to Saudi Arabia and Iran. The heads of some merchant and notable families were likewise exiled. Britain's interest in Bahrain's development was motivated by concerns over the ambitions of the Saudi-Wahabi and the Iranians.