Originally, those eligible for succession were simply those "within the Al Thani family", but within months of the
1995 coup that brought him to power, Emir
Hamad bin Khalifa Al Thani declared changing the line of succession to only include his own male descendants. The permanent constitution of the state of Qatar, published in 2005, dictates that the emir must appoint a crown prince to be his successor from amongst his male children, in consultation with members of the
Al Thani Ruling Family. To be eligible for appointment as crown prince, a candidate must be Muslim and born of a Qatari mother. In the event that the ruling Emir has no eligible male children, the emir must select the crown prince from amongst the eligible members of the broader Al Thani family. The former emir of Qatar, Sheikh
Hamad bin Khalifa Al Thani, appointed his fourth son, Sheikh
Tamim bin Hamad Al Thani, as heir apparent on 5 August 2003, after his older son Sheikh
Jassim bin Hamad Al Thani (who held the position between 1996 and 2003) renounced his rights to the throne in favour of Sheikh Tamim. The three previous transitions of power between emirs happened as a result of coups or forced abdications. Hamad bin Khalifa
replaced his father, Emir
Khalifa bin Hamad, in a bloodless palace coup in June 1995 while Khalifa was on a visit to
Geneva,
Switzerland. Khalifa had himself
replaced his own uncle, Emir
Ahmad bin Ali, under similar circumstances while Ahmad was on a visit to
Iran in February 1972. Emir
Ali bin Abdullah Al Thani was forced to abdicate in favour of his son, Ahmad bin Ali, in October 1960. ==List of rulers==